User:Matthias Buchmeier/en-pt-o

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O {particle} (a vocative particle)  :: ó
OAS {initialism} (Organization of American States)  :: OEA (Organização dos Estados Americanos)
OK {n} (endorsement; approval)  :: ok, certo, , tá bom
OK {adj} (all right, permitted)  :: OK {m}
OK {adj} (satisfactory)  :: bom
OK {adj} (in good health or in a good emotional state)  :: bem
OK {adv} (OK)  :: bem
OK {interj} (acknowledgement or acceptance)  :: OK, tudo bem, certo
OPEC {prop} (Organization of Petroleum Exporting Countries)  :: OPEP {f}
OS {initialism} (operating system)  :: SO
Ob {prop} (Ob River)  :: Ob {m}
Obadiah {prop} (book of the Old Testament)  :: Abdias, Obadias {m}
Obama {prop} (surname)  :: Obama
Occam's razor {prop} (both principles)  :: navalha de Occam {f}
Occitan {prop} (the Romance language)  :: occitano {m}, occitânico {m}, língua d'oc {f}
Occitania {prop} (Occitania)  :: Occitânia
Oceania {prop} (geographical region)  :: Oceania {f}
Oceanian {adj} (from Oceania)  :: oceânico, oceaniense
Oceanian {n} (someone from Oceania)  :: oceânico {m}, oceaniense
Oceanid {n} (any of the sea nymphs)  :: oceânide {f}
Oceanus {prop} (personification of the ocean)  :: Oceano {m}
Octavius {prop} (male given name)  :: Otávio {m}
October {prop} (tenth month of the Gregorian calendar)  :: outubro {m}
Oder {prop} (river)  :: Oder {m}
Odesa {prop} (Odessa) SEE: Odessa  ::
Odessa {prop} (Ukrainian city)  :: Odessa {f}
Odia {prop} (Oriya) SEE: Oriya  ::
Odin {prop} (in Norse mythology, the supreme god)  :: Odin, Ódin
Odisha {prop} (state in India)  :: Orissa {f}
Odysseus {prop} (son of Laertes; Greek leader during the Trojan War)  :: Odisseu {m}, Ulisses {m}
Odyssey {prop} (epic poem describing the journey of Odysseus)  :: Odisseia {f}
Oedipus {prop} (son of Laius and Jocasta)  :: Édipo {m}
Oedipus complex {n} (Freudian theory)  :: complexo de Édipo {m}
Oghuz {prop} (Oghuz people)  :: oguz {m} {f}
Ohio {prop} (U.S. state)  :: Ohio {m}
Ohio {prop} (river)  :: Ohio {m}
Ohm's law {prop} (Ohm's observation)  :: lei de Ohm {f}
Ojibwe {prop} (language)  :: ojibwa {m}, ojibwe {m}
Ojibwe {n} (member of Ojibwe people)  :: ojibwa {m}
Okazaki fragment {n} (one of many newly synthesized DNA fragments formed on the lagging template strand during replication)  :: fragmento de Okazaki {m}
Okinawa {prop} (prefecture)  :: Okinawa {f}
Okinawa {prop} (city)  :: Okinawa {f}
Oklahoma {prop} (state)  :: Oklahoma {m}
Olaf {prop} (male given name)  :: Olavo
Old Armenian {prop} (language)  :: arménio clássico {m} [Portugal], armênio clássico {m} [Brazil], arménio antigo {m} [Portugal], armênio antigo {m} [Brazil]
Old Church Slavonic {prop} (the first literary and liturgical Slavic language)  :: eslavo eclesiástico {m}, antigo eslavo eclesiástico {m}
Old Dutch {prop} (language)  :: holandês antigo {m}
Old East Slavic {prop} (language)  :: antigo eslavo oriental {m}
Old English {prop} (ancestor language of modern English)  :: inglês antigo {m}, anglo-saxão {m}, anglo-saxónico [Portugal], anglo-saxônico [Brazil]
Old English Sheepdog {n} (a breed of herding dog)  :: pastor inglês {m}
Old French {prop} (French language from 9th to the early 14th century)  :: francês antigo {m}
Old High German {prop} (Old High German)  :: alto alemão antigo {m}
Old Norse {prop} (language of Scandinavia before 1400 CE)  :: escandinavo antigo {m}, nórdico antigo {m}, norreno {m}
Old Portuguese {prop} (Portuguese language from 13th to 16th centuries)  :: português antigo {m}, português arcaico {m}, galego-português {m}, galaico-português {m}
Old Slavonic {prop} (Old Church Slavonic)  :: eslavo antigo {m}
Old Slavonic {prop} (Proto-Slavic)  :: proto-eslavo {m}
Old Testament {prop} (first half of the Christian Bible)  :: Antigo Testamento {m}
Old World {prop} (The Eastern Hemisphere, especially Europe and the Near East)  :: Velho Mundo {m}
Olga {prop} (female given name)  :: Olga {f}
Oliver {prop} (male given name)  :: Olivério {m}, Óliver {m}
Olivia {prop} (female given name)  :: Olívia
Olivier salad {n} (traditional Russian salad of boiled vegetables with mayonnaise)  :: salada russa {f}
Oltenia {prop} (Oltenia)  :: Oltênia {f} [Brazil], Olténia {f} [Portugal]
Olympia {prop} (ancient city in Greece)  :: Olímpia
Olympiad {n} (period of four years)  :: olimpíada {f}
Olympic {adj} (of or pertaining to the Olympic Games)  :: olímpico
Olympic {adj} (of or pertaining to mountain Olympus)  :: olímpico
Olympic Games {prop} (international multi-sport event inspired by the ancient festival, see also: Olympics)  :: Jogos Olímpicos {m-p}, Olimpíadas {f-p}
Olympic Winter Games {prop} (Olympic Winter Games)  :: Jogos Olímpicos de Inverno
Olympic athlete from Russia {n}  :: Atletas Olímpicos da Rússia {f-p}
Olympic goal {n} (goal scored directly from a corner kick)  :: gol olímpico {m}
Olympics {prop} (sport event, see also: Olympic Games)  :: Olimpíada {f}, Olimpíadas {f-p}
Olympus {prop} (mountain)  :: Olimpo {m}
Omaha {prop} (city in Nebraska, United States)  :: Omaha {f}
Omaha {prop} (Native American tribe of northeastern Nebraska and western Iowa)  :: omaha {m-p}
Omaha {prop} (the language spoken by the Omaha tribe)  :: omaha {m}
Omaha {n} (a member of the Omaha tribe)  :: omaha {m} {f}
Oman {prop} (country in the Middle East)  :: Omã
Omani {n} (person from Oman or of Omani descent)  :: omanita {m} {f}, omani {m} {f}
Omani {adj} (Of, from, or pertaining to Oman, the Omani people or the Omani language)  :: omanita, omani, omaniano
Omar {prop} (male given name)  :: Omar {m}
Omsk {prop} (large city in Russia)  :: Omsk {f}
Ondine's curse {prop} (medical condition, sufferers of which stop breathing if they fall asleep)  :: maldição de Ondina {f}
Ontario {prop} (Lake between Ontario province and New York State)  :: Ontário {m}
Ontario {prop} (Province in eastern Canada)  :: Ontário
Oort Cloud {prop} (cloud of comets in the Solar System)  :: nuvem de Oort
Open Game {n}  :: abertura aberta {f}
Ophelia {prop} (female given name)  :: Ofélia
Ophiuchus {prop} (zodiacal constellation of the northern summer)  :: Ofiúco {m}
Oporto {prop} (second-largest city of Portugal)  :: Porto
Orange {prop} (Orange River) SEE: Orange River  ::
Orange Free State {prop} (former province of South Africa)  :: Estado Livre de Orange {m}
Orange Free State {prop} (former republic in southern Africa)  :: Estado Livre de Orange {m}
Orange River {prop} (longest river in South Africa)  :: Orange {m}
Oregon {prop} (northwestern state of the United States of America)  :: Oregon {m}, Oregão {m}
Orenburg {prop} (city in Russia)  :: Oremburgo {f}
Orient {prop} (Countries of Asia)  :: Oriente {m}
Oriental {adj} (of or relating to the Orient or Asia, especially the Far East)  :: oriental
Oriental {n} (person)  :: oriental {m} {f}
Oriental Republic of Uruguay {prop} (official name of Uruguay)  :: República Oriental do Uruguai {f}
Orinoco {prop} (river)  :: Orinoco {m}
Orion {prop} (in mythology)  :: Orion
Orion {prop} (constellation)  :: Orion
Orion's Belt {prop} (bright asterism)  :: [Brazil] as Três Marias
Orissa {prop} (Odisha) SEE: Odisha  ::
Oristano {prop} (town)  :: Oristano
Oriya {prop} (language)  :: oriá {m}
Orkney Islands {prop} (group of islands)  :: Orcadas {f-p}, Orcades {f-p}, Órcadas {f-p}, Órcades {f-p}, Ilhas Orkney {f-p}
Orleans {prop} (a city in France)  :: Orleães {f}, Orleans {f}
Orpheus {prop} (the musician who searched for Eurydice)  :: Orfeu {m}
Orthodox {adj} (of the Eastern Christian Orthodox church)  :: ortodoxo
Orthodox {adj} (of Orthodox Judaism)  :: ortodoxo
Orthodox Church {n} (the Eastern body of Christendom)  :: Igreja Ortodoxa {f}
Orthodoxy {prop} (the Eastern Orthodox Church and its foundations)  :: ortodoxia {f}
Oryol {prop} (a city in Russia)  :: Oriol {f}, Orel {f}
Osaka {prop} (Ōsaka, a city in Honshū, Japan)  :: Osaka {f}, Osaca
Oscan {adj} (Of or pertaining to the Oscan language or Oscan people, or their writing system)  :: osco {m}
Oscan {n} (Person)  :: osco {m}
Oscan {prop} (Language)  :: osco {m}
Oscar {prop} (male given name)  :: Oscar {m}, Óscar {m}
Osiris {prop} (Egyptian god of the dead and of the underworld)  :: Osíris {m}
Oslo {prop} (the capital and a county municipality of Norway)  :: Oslo {f}
Osroene {prop} (ancient kingdom)  :: Osroene {f}
Ossetia {prop} (region in the Caucasus)  :: Ossétia {f}
Ossetian {adj} (pertaining to Ossetia)  :: osseta
Ossetian {n} (member of the people)  :: osseta {m} {f}
Ossetian {prop} (language)  :: osseto {m}
Ostrava {prop} (city in the Czech Republic)  :: Ostrava {f}
Ostrogoth {n} (member of a tribe of Eastern Goths)  :: ostrogodo {m}
Oswald {prop} (male given name)  :: Osvaldo {m}
Ottawa {prop} (capital of Canada)  :: Otava {f}, Ottawa {f}
Otto {prop} (male given name)  :: Oto {m}, Otto {m}
Ottoman {n} (Turk from the period of Ottoman Empire)  :: otomano {m}
Ottoman {adj} (of the Islamic empire of Turkey)  :: otomano
Ottoman Empire {prop} (Turkish empire)  :: Império Otomano {m}
Ottoman Turkish {prop} (the variety of the Turkish language that was used as the administrative and literary language of the Ottoman Empire)  :: turco otomano {m}
Ouagadougou {prop} (capital of Burkina Faso)  :: Ouagadougou
Ouija {n} (a board with letters of the alphabet and "yes" and "no")  :: ouija, tabuleiro ouija
Our Lady {prop} (Virgin Mary)  :: Nossa Senhora {f}
Our Lady of Sorrows {prop} (the Virgin Mary in reference to her sorrows)  :: Nossa Senhora das Dores {f}, Nossa Senhora da Piedade {f}, Nossa Senhora da Soledade {f}, Nossa Senhora das Angústias {f}, Nossa Senhora das Lágrimas {f}, Nossa Senhora das Sete Dores {f}, Nossa Senhora do Calvário {f}, Nossa Senhora do Pranto {f}
Ouro Preto {prop} (city in Brazil)  :: Ouro Preto {f}
Outer Mongolia {prop} (East Asian region)  :: Mongólia Exterior {f}
Overijssel {prop} (province of the Netherlands)  :: Overijssel {m}
Oviedo {prop} (town in Spain)  :: Oviedo
Oxford {prop} (city)  :: Oxford {f}, Oxónia {f} [Portugal], Oxônia [Brazil]
Oxford {prop} (university)  :: Oxford {f}
o {n} (name of the letter O, o)  :: ó {m}
o {interj} (vocative particle to mark direct address)  :: ó
-o- {interfix} (linking vowel between morphemes)  :: -o-
oaf {n} (imbecile)  :: imbecil, idiota
oak {n} (tree or shrub of the genus Quercus)  :: carvalho {m}
oak {n} (wood)  :: carvalho {m}
oak tree {n} (tree or shrub of the genus Quercus) SEE: oak  ::
oaken {adj} (made from the wood of an oak)  :: de carvalho
oakum {n} (fibrous caulking material)  :: estopa {f}
oakwood {n} (wood populated with oaks)  :: carvalhal {m}, carvalheira {f}
oar {n} (implement used to row a boat)  :: remo {m}
oar {v} (row) SEE: row  ::
oar blade {n} (flanged portion of an oar)  :: {f}
oasis {n} (well surrounded by fertile region)  :: oásis {m}
oasis {n} (quiet or peaceful place)  :: oásis {m}
oat {n} (a widely cultivated cereal grass)  :: aveia {f}
oat {n} (seeds of the oat) SEE: oats  ::
oath {n} (curse) SEE: curse  ::
oath {n} (solemn pledge)  :: juramento {m}, promessa {f}
oath {n} (affirmed statement)  :: juramento {m}
oath {n} (profanity)  :: palavrão {m}
oath {v} (to pledge)  :: jurar
oatmeal {n} (meal)  :: farinha de aveia {f}
oatmeal {n} (breakfast cereal, see also: porridge)  :: mingau de aveia {m}
oats {n} (seeds of an oat plant)  :: aveia {f}
obedience {n} (quality of being obedient)  :: obediência {f}
obedient {adj} (willing to comply with commands)  :: obediente
obelisk {n} (A tall, square, tapered, stone monolith topped with a pyramidal point)  :: obelisco {m}
obese {adj} (extremely overweight)  :: obeso
obesity {n} (act or state of being obese)  :: obesidade
obey {v} (to do as ordered by)  :: obedecer
obfuscate {v} (make dark)  :: ofuscar
obfuscate {v} (make confusing)  :: ofuscar
obfuscate {v} (alter code)  :: ofuscar
obfuscation {n} (act or process of obfuscating, or obscuring the perception of something)  :: ofuscamento {m}
obfuscation {n} (confusion, bewilderment, or a baffled state resulting from something obfuscated)  :: ofuscamento {m}
obfuscation {n} (intentionally obscuring the meaning of something to make it more difficult to grasp)  :: ofuscamento {m}
obituary {n} (brief notice of a person's death, as published in a newspaper)  :: obituário {m}
obituary {n} (biography of a recently deceased person)  :: obituário {m}
object {n} (thing)  :: objeto {m}
object {n} (in grammar)  :: objeto {m}, complemento
object {n} (person or thing to which an emotion is directed)  :: objetivo {m}
object {n} (in object-oriented programming)  :: objeto {m}
object {v} (disagree with something or someone)  :: objetar
object permanence {n} (understanding that an object still exists when it disappears from sight)  :: permanência de objetos {f}, permanência de objeto {f}
objection {n} (act of objecting)  :: objeção {f}
objection {n} (statement expressing opposition)  :: objeção {f}
objection {n} (official protest raised in a court of law)  :: protesto {m}, objeção {f}
objective {adj} (relating to a material object)  :: objetivo
objective {adj} (not influenced by emotions)  :: objetivo
objective {adj} (based on observed fact)  :: objetivo
objective {n} (material object)  :: objetivo {m}
objective {n} (goal)  :: objetivo {m}
objective {n} ((grammar) the objective case)  :: objetivo {m}
objective {n} (lens)  :: objetiva {f}
objectivity {n} (The state of being objective)  :: objetividade {f}
object-oriented {adj} (using entities called objects)  :: orientado a objetos
object-oriented programming {n} (programming paradigm that uses objects to design application and computer programs)  :: programação orientada a objetos {f}
oblast {n} (region or province)  :: óblast
obligate {v} (to bind, compel, or constrain by a social, legal, or moral tie)  :: obrigação
obligate {v} (to commit (money, for example) in order to fulfill an obligation)  :: obrigação
obligate {adj} (Absolutely indispensable; essential)  :: exigido {m}, essencial
obligation {n} (act of binding oneself by a social, legal, or moral tie to someone)  :: obrigação {f}
obligation {n} (social, legal, or moral requirement)  :: obrigação {f}, compromisso {m}
obligatory {adj} (binding)  :: obrigatório {m}
obligatory {adj}  :: obrigatório
obliged {adj} (Under an obligation to do something for someone)  :: obrigado {m}
obliged {adj} (Indebted because of a favor done)  :: obrigado {m}
obliging {adj} (Happy and ready to do favours for others)  :: prestativo
oblique case {n} (any noun case except the nominative (and vocative))  :: caso oblíquo {m}
obliquity {n} (quality of being obscure) SEE: obscurity  ::
obliquity {n} (quality of being oblique)  :: obliquidade {f}
obliquity {n} (mental or moral deviation)  :: obliquidade {f}
obliterate {v} (to remove completely, leaving no trace; to wipe out; to destroy)  :: aniquilar, obliterar
obliteration {n} (The total destruction of something)  :: obliteração {f}
oblivion {n} (state of forgetfulness or distraction)  :: esquecimento {m}
oblivion {n} (state of being completely forgotten)  :: esquecimento {m}
oblivious {adj} (unaware)  :: inconsciente, sem noção
oblivious {adj} (failing to remember)  :: esquecediço, esquecidiço
oblong {adj} (longer than wide)  :: oblongo, oblongado
obloquy {n} (Abusive language)  :: xingamento {m}
obnoxious {adj} (offensive, very annoying)  :: insuportável, desagradável, obnóxio
obnubilation {n}  :: obnubilação {f}
oboe {n} (wind instrument)  :: oboé {m}
oboe d'amore {n} (instrument of the oboe family)  :: oboe d'amore {m}, oboé d'amore {m}
obolus {n} (silver coin)  :: óbolo {m}
obscene {adj} (offensive to current standards of decency or morality)  :: obsceno
obscene {adj} (lewd or lustful)  :: obsceno
obscene {adj} (disgusting or repulsive)  :: obsceno
obscenity {n} (something that is obscene)  :: obscenidade {f}
obscurantism {n} (state of opposition to progress)  :: obscurantismo {m}
obscurantism {n} (deliberate obscurity or vagueness)  :: obscurantismo {m}
obscure {adj} (dark, faint or indistinct)  :: obscuro
obscurity {n} (darkness; the absence of light)  :: obscuridade {f}
obsequious {adj} (obedient, compliant with someone else's orders)  :: obsequioso
obsequious {adj} (fawning, subservient)  :: obsequioso, submisso
observable {adj} (able to be observed)  :: observável
observation {n} (act of observing or being observed)  :: observação {f}
observation {n} (recording an event; the record of such noting)  :: registro {m}, observação
observation {n} (remark or comment)  :: observação {f}, comentário {m}
observation {n} (judgement)  :: parecer {m}
observation wheel {n} (Ferris wheel) SEE: Ferris wheel  ::
observatory {n} (place where celestial bodies or natural phenomena are observed)  :: observatório {m}
observatory {n} (lookout) SEE: lookout  ::
observe {v} (to notice, to watch)  :: observar
observe {v} (to follow)  :: seguir, acompanhar
observe {v} (to observe) SEE: notice  ::
observer {n} (one who makes observations, monitors or takes notice)  :: observador {m}
obsessed {adj} (fixated on a single topic or emotion)  :: obcecado
obsession {n} (compulsive or irrational preoccupation)  :: obsessão {f}
obsession {n} (unhealthy fixation)  :: obsessão {f}
obsessive {adj} (having one thought or pursuing one activity to the absolute or nearly absolute exclusion of all others)  :: obsessivo
obsidian {n} (a type of black glass produced by volcanoes)  :: obsidiana {f}
obsolescence {n} (state)  :: obsolescência {f}
obsolescent {adj} (in the process of becoming obsolete, but not obsolete yet)  :: obsolescente
obsolete {adj} (no longer in use)  :: obsoleto {m}, obsoleta {f}
obstacle {n} (something that impedes, stands in the way of, or holds up progress)  :: obstáculo {m}
obstetric {adj} (relating to obstetrics)  :: obstétrico, obstetrício
obstetrician {n} (a physician who specializes in childbirth)  :: obstetra {m} {f}
obstetrics {n} (care of women during and after pregnancy)  :: obstetrícia {f}
obstinate {adj} (adhering to an opinion, purpose, or course, usually unreasonably)  :: obstinado, persistente, pertinaz
obstruct {v} (To block or fill (a passage))  :: obstruir, trancar, entupir
obstruct {v} (To impede, retard, or interfere with)  :: obstruir
obstruct {v} (To get in the way of so as to hide from sight)  :: obstruir, ocultar, esconder
obstructive {adj} (causing obstructions)  :: obstrutivo
obtain {v} (to get hold of, acquire)  :: obter
obtain {v} (to hold, possess)  :: ter, possuir
obtainable {adj} (capable of being obtained)  :: obtenível, obtível
obtuse {adj} (intellectually dull)  :: obtuso, bronco, parvo
obtuse {adj} (deadened, muffled, muted)  :: abafado
obtuse {adj} (of an angle)  :: obtuso
obtuse {adj} (botany, zoology: blunt)  :: obtuso
obtuse angle {n} (angle that is greater than 90 degrees and less than 180 degrees)  :: ângulo obtuso {m}
obviate {v} (to bypass a requirement)  :: obviar
obvious {adj} (easily discovered or understood; self-explanatory)  :: óbvio
obviously {adv} (in an obvious manner; clearly apparent)  :: obviamente
ocarina {n} (a musical instrument)  :: ocarina {f}
occasion {n} (favorable opportunity)  :: ocasião {f}
occasion {n} (particular happening)  :: ocasião
occasion {n} (occurrence or incident) SEE: occurrence  ::
occasional {adj} (limited to certain occasions; not very often)  :: ocasional
occasionally {adv} (from time to time; now and then; once in a while; at infrequent intervals)  :: ocasionalmente
occident {n} (part of the horizon where the sun last appears in the evening; that part of the earth towards the sunset; the west)  :: ocidente {m}
occipital {adj} (of or pertaining to the occiput (back of the head) or the occipital bone)  :: occipital
occipital {n} (occipital bone)  :: occipital {m}
occiput {n} (back of the head or skull)  :: occipício {m}, occipúcio {m}, occipital {m}, occiput {m}
occlusive {n} (plosive) SEE: plosive  ::
occult {v} (to cover)  :: ocultar
occult {adj} (secret; hidden from general knowledge; undetected)  :: oculto, ocultado
occult {adj} (related to the occult)  :: oculto
occult {n} (supernatural affairs)  :: oculto, ocultismo
occultation {n} (astronomical event)  :: ocultação
occultism {n} (study of the supernatural)  :: ocultismo {m}
occultist {n} (person who practises occultism)  :: ocultista {m} {f}
occupant {n} (person sitting in a vehicle)  :: ocupante {m} {f}
occupation {n} (activity or task with which one occupies oneself)  :: ocupação {f}, serviço {m}, emprego {m}, trabalho {m}
occupation {n} (act, process or state of possessing a place)  :: ocupação {f}
occupation {n} (control of a country or region by a hostile army)  :: ocupação {f}, tomada {f}
occupational hazard {n} (an unpleasant, inconvenient, or unusual circumstance which occurs or is likely to occur during the course of one's employment)  :: ossos do ofício {m-p}
occupied {adj} (reserved)  :: ocupado
occupied {adj} (busy)  :: ocupado
occupied {adj} (militarily subjugated)  :: ocupado
occupy {v} (to occupy) SEE: consume  ::
occupy {v} (to fill (time))  :: ocupar
occupy {v} (to fill (space))  :: ocupar
occupy {v} (time or space)  :: ocupar
occupy {v} (reside in)  :: ocupar
occupy {v} (have (taken) control of)  :: ocupar
occupy {v} (hold a position)  :: ocupar
occupy {v} (hold attention of)  :: ocupar
occur {v} (take place)  :: ocorrer, acontecer
occur {v} (present itself)  :: ocorrer
occur {v} (meet or come to the mind)  :: ocorrer
occur {v} (be present or found)  :: ocorrer, passive or reflexive forms of encontrar
occurrence {n} (actual instance where a situation arises)  :: ocorrência {f}, acontecimento {m}
ocean {n} (one of the large bodies of water)  :: oceano {m}
oceanarium {n} (park where visitors can see marine animals)  :: oceanário {m}
oceanic {adj} (of or relating to the ocean)  :: oceânico
oceanic {adj} (living in the ocean)  :: oceânico
oceanic whitetip shark {n} (Carcharhinus longimanus)  :: galha-branca oceânico {m}
oceanographer {n} (person who studies oceanography, the science of oceans)  :: oceanógrafo {m}
oceanographic {adj} (relating to oceanography)  :: oceanográfico
oceanographical {adj} (oceanographical) SEE: oceanographic  ::
oceanography {n} (oceanic exploration and study)  :: oceanografia {f}, oceanologia {f}
oceanology {n} (oceanography) SEE: oceanography  ::
ocelot {n} (feline carnivore)  :: jaguatirica {f}, gato-do-mato {m}, ocelote {m}
ochlocracy {n} (government by the masses)  :: oclocracia {f}
ochre {n} (earth pigment)  :: ocre {m}, ocra {f}
ochre {n} (yellowish-orange colour)  :: ocre {m}, ocra {f}
ochre {adj} (having yellow-orange colour)  :: ocre
ochric {adj} (too thin, light in colour, or low in organic matter to be considered mollic or umbric)  :: ócrico
o'clock {adv} (indication of time (the translations below are of "one o’clock"))  :: uma hora, uma (hora) em ponto
o'clock {adv} (the translations below are of "at one o’clock")  :: à uma (hora)
octagon {n} (polygon with eight sides and eight angles)  :: octógono {m}
octagonal {adj} (shaped like an octagon)  :: octogonal
octahedron {n} (a polyhedron with eight faces)  :: octaedro {m}
octalogy {n} (A set of eigth works of art that are connected)  :: octologia {f}, octalogia {f}
octane {n} (isomeric aliphatic hydrocarbons)  :: octano {m}
octane number {n} (measure of the antiknock properties of an automobile fuel)  :: octanagem {f}
octangular {adj} (octagonal) SEE: octagonal  ::
octavate {v} (sound one octave higher or lower)  :: oitavar
octave {n} (interval)  :: oitava {f}
octave {n} (pitch octave higher than a given pitch)  :: oitava {f}
octave {n} (day that is one week after a feast day)  :: oitava {f}
octet {n} (group of eight)  :: octeto {m}
octet {n} (group of eight musicians performing together)  :: octeto {m}
octet {n} (byte of eight bits) SEE: byte  ::
octillion {num} (a thousand trillion trillion, 1027)  :: octilhão
octopus {n} (mollusc)  :: polvo {m}
octothorpe {n} (octothorpe) SEE: hash  ::
ocular {adj} (seen by the eye) SEE: visual  ::
oculist {n} (optometrist) SEE: optometrist  ::
oculist {n} (ophthalmologist) SEE: ophthalmologist  ::
odalisque {n} (a female harem slave)  :: odalisca {f}
odd {adj} (not having a mate)  :: ímpar
odd {adj} (strange)  :: estranho, raro
odd {adj} (not divisible by two)  :: ímpar
odd {adj} (casual, irregular)  :: ocasional
odd {adj} (about)  :: aproximadamente
odd job {n} (task of incidental nature)  :: biscate {m}
oddball {n} (eccentric person)  :: excêntrico {m}
odds {n} (the ratio of the probabilities of an event happening to that of it not happening)  :: chances {f-p}
odds and ends {n} (miscellaneous things)  :: miudezas {f-p}
ode {n} (a short poetical composition)  :: ode {f}
odeon {n} (ancient Greek or Roman building)  :: odeão {m}, odeom {m}
odeon {n} (modern theatre or concert hall)  :: odeão {m}, odeom {m}
odious {adj} (arousing strong dislike)  :: odioso {m}, odiosa {f}
odometer {n} (instrument attached to the wheel)  :: odómetro {m} [Portugal], odômetro {m} [Brazil], hodómetro {m} [Portugal], hodômetro {m} [Brazil]
odontoblast {n}  :: odontoblasto {m}
odor {n} (any smell) SEE: odour  ::
odorless {adj} (having no odor)  :: inodoro {m}
odour {n} (Any smell, whether fragrant or offensive; scent; perfume)  :: odor {m}
odourless {adj} (odourless) SEE: odorless  ::
odyssey {n} (extended adventurous voyage)  :: odisseia {f}
odyssey {n} (intellectual or spiritual quest)  :: odisseia {f}
oedema {n} (edema) SEE: edema  ::
oeillade {n} (glance, ogle)  :: olhar {m}
oeno- {prefix} (forms terms relating to wine)  :: eno-
oesophageal {adj} (of or pertaining to the oesophagus)  :: esofágico
oesophagus {n} (the tube that carries food from the pharynx to the stomach)  :: esófago {m} [Portugal], esôfago {m} [Brazil]
oestrus {n} (a female animal's readiness to mate)  :: estro {m}, cio {m}
of {prep} ((time) before, to)  :: para
of {prep} (containing, comprising or made from)  :: de
of {prep} (linking class with example of class)  :: de
of {prep} (introducing subject matter)  :: de, sobre, em, a respeito de
of {prep} (connecting numeral or quantifier with quantified)  :: de (not used with quantifiers like todo, nem todo, para todo)
of {prep} (possessive genitive: belonging to)  :: de
of {prep} (objective genitive: connecting noun with object)  :: de
of {prep} (indicative of age)  :: de
of age {prep} (old enough to be considered an adult)  :: maior
of all time {prep} ((informal) ever)  :: de todos os tempos
of color {adj} (of a race other than white (euphemistic))  :: de cor
of course {adv} (naturally)  :: claro, naturalmente, lógico
of late {prep} (recently)  :: recentemente
of record {prep} (authoritative) SEE: authoritative  ::
off {adv} (into a state of non-operation or non-existence)  :: desligado
off {adj} (inoperative, disabled)  :: desligado
off {adj} (rotten)  :: estragado
off {v} (to kill)  :: apagar [slang]
off {v} (to switch off)  :: apagar, desligar
offal {n} (dead body) SEE: corpse  ::
offal {n} (refuse) SEE: refuse  ::
offal {n} (animal's organs as food)  :: miúdos {m-p}, cabidela {f} [of birds], fressura {f}, bofes {m-p}
offal {n} (carrion) SEE: carrion  ::
offence {n} (offense) SEE: offense  ::
offend {v} (sin) SEE: sin  ::
offend {v} (to hurt the feelings)  :: ofender
offend {v} (to physically harm, pain)  :: prejudicar
offend {v} (to transgress or violate a law or moral requirement)  :: ofender
offend {v} (to feel or become offended)  :: ofender-se
offender {n} (one who gives or causes offense)  :: ofensor {m}
offender {n} (a person who commits an offense against the law)  :: transgressor {m}, criminoso {m}
offense {n} (act of offending against the law)  :: ofensa {f}, delito {m}, transgressão {f}
offense {n} (act of offending against manners)  :: ofensa {f}, insulto {m}
offense {n} (strategy and tactics employed when in position to score)  :: ataque {m}
offense {n} (portion of a team dedicated to scoring)  :: ataque {m}
offensive {adj} (causing offense)  :: ofensivo {m}, ofensiva {f}
offensive {adj} (relating to attack, offense)  :: ofensivo
offensive {adj} (team sports: having to do with play directed at scoring)  :: ofensivo
offensive {n} (an attack)  :: ofensiva {f}
offensive {n} (posture of attack)  :: ofensiva {f}
offer {n} (proposal)  :: oferta {f}, proposta {f}
offer {n} (something put forth)  :: oferta {f}
offer {n} (law: invitation to enter binding contract)  :: proposta {f}
offer {v} (propose)  :: oferecer
offer {v} (place at disposal)  :: oferecer
offering {n} (act of offering)  :: oferecimento {m}, oferta {f}
offering {n} (that which has been offered; a sacrifice)  :: oferenda {f}
offhand {adj} (without planning or thinking ahead)  :: improviso
office {n} (room(s) or building used for non-manual work)  :: escritório {m}
office {n} (major governmental division)  :: escritório {m}
office {n} (kindness) SEE: good offices  ::
office chair {n} (desk chair used in an office)  :: cadeira de escritório {f}
officer {n} (one who has a position of authority in a hierarchical organization)  :: oficial {m} {f}, comandante {m} {f}
officer {n} (one who holds a public office)  :: funcionário público {m}
officer {n} (contraction of the term "commissioned officer")  :: oficial {m} {f}
official {adj} (relating to an office; especially, to a subordinate executive officer or attendant)  :: oficial
official {n} (office holder invested with powers and authorities)  :: oficial {m}, funcionário {m}
officially {adv} (in an official manner)  :: oficialmente
off-licence {n} (liquor store) SEE: liquor store  ::
offline {adj} (of a system, not connected to a larger network)  :: fora de linha, offline
offset {n} (compensating equivalent)  :: compensação {f}, contrapartida {f}
offset {n} (time at which something begins)  :: início {m}
offset {n} (offset printing)  :: offset {m}, ofsete {m}
offset {n} (difference in memory addresses)  :: offset {m}
offset {n} (distance by which one thing is out of alignment with another)  :: desalinhamento {m}
offset {v} (to compensate for something)  :: compensar
offshoot {n} (that which shoots off from a main stem)  :: desvio {m}, ramificação {m}
offside {adj} (in an illegal position ahead of the ball)  :: impedido
offside {adj} (to the side of a road)  :: junto à estrada
offside {n} (offside play)  :: impedimento {m}
offspring {n} (singular offspring (male, female or sex unspecified))  :: filho {m}, filha {f}, rebento {m}
offspring {n} (plural or collective offspring (only males, only females, both sexes or sex unspecified))  :: descendência {f}
offspring {n} (plural or collective offspring, animal's or plant's progeny)  :: descendente {m} {f}
often {adv} (frequently, many times)  :: frequentemente, seguido
oftenly {adv} (often) SEE: often  ::
ogive {n} (Gothic pointed arch)  :: ogiva {f}
ogive {n} (nose of a bullet, missle, or rocket)  :: ogiva {f}
ogre {n} (brutish giant)  :: ogro {m}, ogre {m}
oh {interj} (expression of surprise)  :: ó
oh dear {interj} (expression of dismay, concern, worry or disapproval)  :: Virgem Maria!
oh my {interj} (good heavens) SEE: good heavens  ::
oh my God {interj} (excitement or shock)  :: meu Deus, nossa
oh my gosh {interj} (oh my God)  :: oh minha nossa
oh no {interj} (exclamation of alarm or concern)  :: bolas
ohm {n} (the derived unit of electrical resistance)  :: ohm {m}
oi {interj} (exclamation to get attention) SEE: hey  ::
-oic {suffix}  :: -oico
oil {n} (liquid fat)  :: óleo {m}
oil {n} (petroleum-based liquid)  :: petróleo {m}, óleo {m}
oil {v} (lubricate with oil)  :: olear
oil {v} (to grease with oil for cooking)  :: olear
oil lamp {n} (a simple vessel used to produce light)  :: lampião {m}, candeeiro {m}
oil painting {n} (a painting done with oil paints)  :: pintura a óleo {f}, óleo {m}
oil painting {n} (art of painting with oil paints)  :: pintura a óleo {f}
oil pipeline {n} (a gas pipeline)  :: oleoduto {m}
oil platform {n} (structure for oil)  :: plataforma de petróleo {f}, plataforma {f}
oil rig {n} (oil-drilling platform)  :: plataforma de poço de petróleo {f}
oil slick {n} (thin film of oil floating on the surface of water)  :: maré negra {f}
oil tanker {n} (Ship)  :: navio-petroleiro {m}
oil well {n} (hole drilled into the earth from which petroleum is pumped)  :: poço de petróleo {m}
oiler {n} (oil well) SEE: oil well  ::
oiler {n} (ship) SEE: oil tanker  ::
oily {adj} (relating to oil)  :: oleoso {m}, oleaginoso {m}, oleento {m}
oily {adj} (covered with or containing oil)  :: oleoso {m}, oleaginoso {m}, oleento {m}
oink {interj} (Representing the sound made by a pig)  :: oinc
oink {n} (sound made by a pig)  :: grunhido {m}
oink {v} (to oink)  :: grunhir
ointment {n} (viscous preparation, usually containing medication)  :: pomada {f}
okapi {n} (Large ruminant mammal)  :: ocapi {m}
okara {n} (a food made from soybean pulp)  :: okara {m}
okra {n} (Abelmoschus esculentus)  :: quiabeiro {m} (plant), quiabo {m} (pods)
okroshka {n} (cold raw vegetable soup)  :: okroshka {f}
okrug {n} (administrative division)  :: okrug {m}
old {adj} (of an object, concept, etc: having existed for a relatively long period of time)  :: velho, antigo
old {adj} (of a living being: having lived for relatively many years)  :: velho, idoso
old {adj} (former)  :: antigo
old {adj} (having existed or lived for the specified time)  :: de, com
old {adj} ((of an item) used, not new)  :: usado
old {adj} (tiresome)  :: cansativo
old age {n} (latter part of life)  :: velhice {f}
old as the hills {adj} (extremely old)  :: mais velho que a Sé de Braga
old boy {n} (alumnus) SEE: alumnus  ::
old folks' home {n} (nursing home) SEE: nursing home  ::
old habits die hard {proverb} (existing habits are hard to change)  :: velhos hábitos nunca morrem
old maid {n} (elderly unmarried woman) SEE: spinster  ::
old man {n} (elderly man)  :: velho {m}, idoso {m}, velhote {m} [informal]
old man {n} (father (slang))  :: velhote {m}
old people's home {n} (nursing home) SEE: nursing home  ::
old salt {n} (seadog) SEE: seadog  ::
old stick {n} (chap) SEE: chap  ::
old woman {n} (elderly woman)  :: velha {f}, idosa {f}
older brother {n} (a sibling's older brother)  :: irmão mais velho {m}
older sister {n} (a sibling's older sister)  :: irmã mais velha {f}
older than dirt {adj} (old as the hills) SEE: old as the hills  ::
old-fashioned {adj} (outdated or no longer in vogue)  :: démodé, demodê, antiquado
old-fashioned {adj} (preferring the customs of earlier times)  :: antigo, antiquado [derogatory], à moda antiga
old-growth forest {n} (forest that has attained great age without significant disturbance)  :: floresta primária {f}
oldness {n} (state of being old)  :: velhice
old-timer {n} (one who has been around for a long time or has a great deal of experience)  :: veterano {m}
oleander {n} (A poisonous shrub)  :: oleandro {m}, espirradeira {f}
oleic {adj} (of or pertaining to oil)  :: oléico
oleic {adj} (of or pertaining to oleic acid)  :: oleico
oleic acid {n} (fatty acid with 18 carbon atoms and one double bond, found in olive oil)  :: ácido oleico {m}
olfaction {n} (the sense of smell)  :: olfato {m}
olfactory {adj} (concerning the sense of smell)  :: olfactório, olfatório, olfativo
olifant {n} (type of horn)  :: olifante {m}
oligarch {n} (a member of an oligarchy)  :: oligarca {m} {f}
oligarchic {adj} (of or pertaining to oligarchy)  :: oligárquico
oligarchy {n} (Government by only a few)  :: oligarquia {f}
oligarchy {n} (Those who make up an oligarchic government)  :: oligarquia {f}
oligarchy {n} (State ruled by such a government)  :: oligarquia {f}
oligo- {prefix} (few)  :: oligo-
oligochaete {n} (worm of the class Oligochaeta)  :: oligoqueta {m}
oligonucleotide {n} (a short sequence of nucleotides)  :: oligonucleotídeo {m}
oligopoly {n} (economic condition)  :: oligopólio {m}
olive {n} (fruit)  :: azeitona {f}, oliva {f}
olive {n} (wood)  :: oliveira {f}
olive {n} (colour)  :: verde-oliva {m}
olive {adj} (colour)  :: verde-azeitona, verde-oliva
olive {n} (olive tree) SEE: olive tree  ::
olive grove {n} (cluster of olive trees)  :: olival {m}
olive oil {n} (oil pressed from olives)  :: azeite {m}
olive ridley sea turtle {n} (Lepidochelys olivacea)  :: tartaruga-oliva {f}
olive tree {n} (tree that produces olives)  :: oliveira {f}
olivine {n} (family of minerals forming orthorhombic crystals)  :: olivina {f}
olla podrida {n} (miscellaneous assortment) SEE: hodgepodge  ::
olla podrida {n} (Spanish stew of seasoned meat and vegetables)  :: olla podrida {f}
olm {n} (Proteus anguinus)  :: próteo {m}, proteu {m}
-oma {suffix} (suffix forming nouns indicating tumors or masses)  :: -oma {m}
omasum {n} (the third part of the stomach of a ruminant)  :: omaso {m}
ombudsman {n} (official who investigates complaints)  :: ombudsman {m}, ouvidor {m}
ombudswoman {n} (a female ombudsman)  :: ouvidora {f}
omega {n} (letter of the Greek alphabet)  :: ómega {m}
omega {n} (angular velocity) SEE: angular velocity  ::
omelette {n} (dish made with beaten eggs)  :: omelete {f}, fritada {f}
omen {n} (something which portends or is perceived to portend a good or evil event or circumstance in the future; an augury or foreboding)  :: augúrio {m}, agouro {m}, presságio {m}, vaticínio {m}
omen {n} (prophetic significance)  :: presságio {m}
omicron {n} (Greek letter)  :: ômicron {m}
ominous {adj} (of or pertaining to an omen or to omens; being or exhibiting an omen)  :: ominoso, agourento {m}
ominous {adj} (giving indication of a coming ill)  :: agourento {m}
omission {n} (the act of omitting)  :: omissão {f}
omission {n} (the act of neglecting to perform an action one has an obligation to do)  :: negligência {f}
omission {n} (something deleted or left out)  :: omissão {f}
omission {n} (something not done or neglected)  :: omissão {f}
omit {v} (to leave out or exclude)  :: omitir
omni- {prefix} (all)  :: oni-, omni-
omnibus {n} (vehicle)  :: ônibus {m}
omnibus {n} (anthology of previously released material)  :: compilação {f}
omnidirectional {adj} (in every direction)  :: omnidirecional {m} {f}
omnipotence {n} (unlimited power)  :: omnipotência {f} [Portugal], onipotência {f} [Brazil]
omnipotent {adj} (having unlimited power, force or authority)  :: omnipotente, onipotente [Brazil]
omnipresence {n} (the ability to be at all places at the same time)  :: onipresença {f}
omnipresent {adj} (being everywhere)  :: omnipresente
omniracial {adj} (concerning every race)  :: omniracial
omniscience {n} (capacity to know everything)  :: omnisciência {f} [Portugal], onisciência {f} [Brazil]
omniscient {adj} (having total knowledge)  :: onisciente
omnitheism {n} (The belief that all religions contain a core recognition of the same God)  :: omniteísmo {m}
omnium-gatherum {n} (collection of miscellaneous things) SEE: hodgepodge  ::
omnivore {n} (animal eating both plants and meat)  :: onívoro
omnivorous {adj} (having the ability to eat both animal and vegetable food)  :: omnívoro [Portugal], onívoro [Brazil]
omphalo- {prefix} (relating to the navel)  :: onfalo-
omphalocele {n} (hernia of the navel)  :: onfalocele {f}
on {adj} (in the state of being active, functioning or operating)  :: ligado
on {prep} (positioned at the upper surface of)  :: na, no, sobre
on {prep} (covering)  :: em
on {prep} (at the date of)  :: na, no
on {prep} (dealing with the subject of)  :: na, no
on {prep} (touching; hanging from)  :: na, no
on a whim {prep} (done without thinking seriously about the consequences)  :: num repente
on account of {prep} (because of, owing to)  :: devido a
on air {prep} (transmitting live)  :: no ar
on all fours {adv} (on hands and knees)  :: de quatro
on behalf of {prep} (speaking or acting for)  :: em nome de
on board {adv} (aboard) SEE: aboard  ::
on earth {prep} (expletive giving emphasis after interrogative word)  :: diabos
on foot {prep} (walking, jogging, running)  :: a pé
on hand {prep} (available)  :: em mãos
on purpose {prep} (purposely, with intention)  :: de propósito
on the air {prep} (in the process of recording or broadcasting) SEE: on air  ::
on the back burner {prep} (not immediate)  :: em banho-maria
on the brink {prep} (very near to)  :: à beira de
on the contrary {prep} (opposite)  :: ao contrário, pelo contrário
on the fly {adv} ((baseball, of the ball) Without a bounce)  :: sem sobressaltos
on the hook {prep} (liable) SEE: liable  ::
on the loose {prep} (not in captivity)  :: à solta
on the one hand {prep} (from one point of view)  :: por um lado
on the other hand {prep} (from another point of view)  :: por outro lado
on the ropes {adj} (showing signs of imminent failure or collapse)  :: na corda bamba
on the same wavelength {prep} (in rapport)  :: em sintonia
on the street {prep} (without a home)  :: nas ruas
on the tip of one's tongue {prep} (known but not quite remembered)  :: estar na ponta da língua (to be on the tip of one’s tongue)
on the warpath {prep} (very angry or upset)  :: em pé de guerra
on the way {prep} (coming)  :: a caminho
on time {adv} (punctually)  :: na hora
on your mark, get set, go {phrase} (three-command start of racing)  :: preparar, apontar, vai
onager {n} (wild ass)  :: onagro {m}
onager {n} (military engine)  :: onagro {m}
onanism {n} (masturbation)  :: onanismo {m}
once {adv} (one and only one time)  :: uma vez
once {adv} (formerly)  :: outrora
once {conj} (as soon as)  :: assim que, logo após/depois, tão logo
once again {adv} (one more time)  :: novamente, denovo, de novo, outra vez
once and for all {adv} (Finally, permanently, conclusively)  :: de uma vez por todas
once bitten, twice shy {proverb} (one is cautious in the future if hurt in the past)  :: gato escaldado de água fria tem medo
once in a blue moon {adv} (very rarely)  :: de vez em nunca
once more {adv} (one more time) SEE: once again  ::
once upon a time {adv} (traditional beginning of children’s stories, especially fairy tales)  :: era uma vez
oncilla {n} (Leopardus tigrinus)  :: gato-do-mato-pequeno {m}
oncogene {n} (gene)  :: oncogene {m}
oncologist {n} (one who specialises in oncology)  :: oncologista
oncology {n} (branch of medicine)  :: oncologia {f}
one {pron} (impersonal pronoun)  :: not translated
one {pron} (indefinite personal pronoun)  :: use third-person singular reflexive
one {n} (digit or figure)  :: um {m}
one {adj} (of a period of time)  :: algum, um
one {adj} (a single, unspecified thing)  :: algum
one {adj} (sole, only)  :: único
one {adj} (whole, entire)  :: um
-one {suffix} (ketone)  :: -ona {f}
one and a half {num} (one and a half)  :: um e meio
one another {pron} (idiomatic, reciprocal pronoun)  :: um ao outro {m}, se
one by one {adv} (individually)  :: um por um
one day {adv} (at unspecified time in the future)  :: algum dia
one day {adv} (at unspecified time in the past)  :: uma vez
one for all, all for one {phrase} (motto: working for each other)  :: um por todos, todos por um
one for the road {n} (a final drink before one leaves)  :: saideira {f}
one hundred and one {num} (one hundred plus one)  :: cento e um
one hundred and one {n} (figure 101)  :: cento e um
one hundred million {num} (number 100,000,000)  :: cem milhões
one hundred one {num} (101)  :: cento e um {m}
one hundred percent {adj} (complete, total)  :: cem por cento
one hundred percent {adv} (completely, totally)  :: cem por cento
one hundred six {num} (number 106)  :: cento e seis
one man's trash is another man's treasure {proverb}  :: o lixo de um homem é o tesouro de outro
one million {num} (cardinal number 1000000) SEE: million  ::
one moment, please {phrase} (one moment please)  :: um momento, por favor
one o'clock {n} (the start of the second hour)  :: uma hora
one of these days {adv} (one day)  :: qualquer dia desses, algum dia desses, um dia desses
one swallow does not a summer make {proverb} (one instance of an event does not necessarily indicate a trend)  :: uma andorinha só não faz verão
one thousand {num} (cardinal number 1000) SEE: thousand  ::
one-child policy {n} (a policy of population control)  :: política do filho único {f}
one-dimensional {adj} (having length, but no width, height or depth)  :: unidimensional
one-eyed {adj} (having only a single eye)  :: caolho, zanolho, zarolho
oneirologist {n} (interpreter of dreams)  :: onirólogo {m}
oneirology {n} (the study of dreams)  :: onirologia {f}
oneironaut {n} (explorer of dream worlds)  :: onironauta
oneness {n} (state of being undivided)  :: unidade {f}
one-night stand {n} (sexual encounter)  :: ficada {f}
onerous {adj} (burdensome)  :: oneroso {m}, onerosa {f}
one's {pron} (belonging to one)  :: seu, de alguém
one's bark is worse than one's bite {phrase} (one acts in a threatening way but is relatively harmless)  :: cão que ladra não morde
one's marbles {n} (sanity) SEE: sanity  ::
oneself {pron} (The person, previously mentioned)  :: se, si [prepositional]
one-sided {adj} (partial or biased in favour of one faction)  :: parcial, unilateral
one-sided {adj} (with one competitor dominant over the other)  :: unilateral
one-size-fits-all {adj}  :: tamanho único {m}
one-way {adj} (allowing movement in only one direction)  :: de mão única
one-way {adj} (allowing travel in only one direction)  :: sem retorno
one-way street {n} (road in which traffic is only allowed to proceed in one direction)  :: rua de mão única {f}
one-way ticket {n} (a ticket granting permission to travel to a place but not back)  :: passagem só de ida {f}, bilhete só de ida {m}, passagem sem volta {f}, passagem sem retorno {f}, bilhete sem volta {m}
ongoing {adj} (continuing, permanent)  :: contínuo, em curso
ongoing {adj} (presently or currently happening; being in progress)  :: em andamento, corrente, em curso
onion {n} (plant)  :: cebola {f}
onion {n} (bulb)  :: cebola
onion dome {n} (onion-shaped dome)  :: cúpula bulbosa {f}
online {adj} (connected to a network)  :: online, em linha
online {adj} (available over the Internet)  :: online
online {adj} (connected to the Internet)  :: online, em linha
onlooker {n} (spectator) SEE: spectator  ::
only {adj} (alone in a category)  :: único
only {adj} (without sibling)  :: filho único
only {adj} (singularly superior; the best)  :: único, melhor
only {adv} (without others or anything further; exclusively)  :: apenas, somente
only {adv} (no more than)  :: apenas, somente
only {adv} (as recently as)  :: apenas, somente
only {conj} (but)  :: mas, porém, todavia
only {conj} (however)  :: mas, porém, todavia
only {conj} (except)  :: salvo que, exceto que
only child {n} (a person who has no siblings)  :: filho único {m}, filha única {f}
onomasiology {n} (branch of lexicology)  :: onomasiologia {f}
onomastic {adj} (of, or relating to onomastics)  :: onomástico {m}
onomastics {n} (branch of lexicology devoted to the study of names)  :: onomástica {f}
onomatopoeia {n} (property of a word of sounding like what it represents)  :: onomatopeia {f}
onomatopoeia {n} (word that sounds like what it represents)  :: onomatopeia
onomatopoeic {adj} (of or relating to onomatopoeia)  :: onomatopaico {m}, onomatópico {m}, onomatopeico {m}
onomatopoeic {adj} (having the property of onomatopoeia)  :: onomatopaico {m}, onomatópico {m}, onomatopeico {m}
onomatopoetic {adj} (concerning onomatopoeia) SEE: onomatopoeic  ::
onsen {n} (a Japanese hot spring)  :: onsen {m}
onset {n} (rushing or setting upon)  :: investida {f}
onset {n} (medicine: initial phase of a disease or condition)  :: anábase {f}
onset {n} (phonology: initial portion of a syllable)  :: ataque {m}
onslaught {n} (fierce attack)  :: assalto {m}, investida {f}
onslaught {n} (large quantity of people or things resembling an attack)  :: invasão {f}
onslaughter {n} (onslaught) SEE: onslaught  ::
ontic {adj}  :: ôntico {m}
onto {prep} (upon; on top of)  :: sobre, no {m}, na {f}
ontological {adj} (of, or relating to, ontology)  :: ontológico {m}
ontology {n} (study of being)  :: ontologia {f}
ontology {n} (system model in computer science)  :: ontologia {f}
onus probandi {n} (duty of a party in a legal proceeding) SEE: burden of proof  ::
onward {adv} (In a forward direction)  :: para diante, a partir de agora
onychophagia {n} (compulsive biting of one's nails)  :: onicofagia {f}
onyx {n} (a banded variety of chalcedony)  :: ónix
oocyte {n} (cell that develops into egg or ovum)  :: oócito {m}, ovócito {m}
oofless {adj} (poor) SEE: poor  ::
oops {interj} (acknowledging a minor mistake)  :: opa, ops
ooze {v} (to secrete or slowly leak)  :: escoar, verter, excretar, segregar
op shop {n} (thrift shop) SEE: thrift shop  ::
opal {n} (a mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity)  :: opala {f}
opaque {adj} (hindering light to pass through)  :: opaco {m}
open {adj} (not closed)  :: aberto
open {adj} (prepared to conduct business)  :: aberto
open {adj} (receptive)  :: aberto
open {adj} (public)  :: aberto
open {v} (to make something accessible)  :: abrir
open {v} (to bring up (a topic))  :: abrir
open {v} (to make accessible to customers)  :: abrir
open {v} (to start (a campaign))  :: iniciar, começar
open {v} (to become open)  :: abrir
open {v} (to begin conducting business)  :: abrir
open {n} (sports event)  :: aberto {m}
open air {n} (the outside)  :: ar livre
open book {n} (thing easily interpreted)  :: livro aberto {m}
open book {n} (person naively honest or open)  :: livro aberto {m}
open relationship {n} (the relationship with possible additional relationships)  :: relacionamento aberto {m}
open sea {n} (part of the sea)  :: alto mar, mar aberto
open sesame {interj} (Open up)  :: abre-te sésamo
open source {n} (practice)  :: código aberto {m}
open source {n} (software)  :: código aberto {m}
open-air {adj} (taking place outdoors)  :: a céu aberto, ao ar livre
opener {n} (device that opens something)  :: abridor
opening {n} (act or instance of making or becoming open)  :: abertura {f}
opening {n} (something that is open)  :: abertura {f}
opening {n} (act or instance of beginning)  :: abertura {f}
opening {n} (beginning)  :: início {m}
opening {n} (first performance of a show or play by a particular troupe)  :: abertura {f}
opening {n} (unoccupied employment position)  :: vaga {f}
openly {adv} (in an open manner, visibly, not covertly)  :: abertamente
open-minded {adj} (willing to consider new ideas)  :: de mente aberta
opera {n} (theatrical work)  :: ópera {f}
opera {n} (score)  :: ópera {f}
opera {n} (building)  :: ópera {f}
opera {n} (company)  :: ópera {f}
opera house {n} (theatre for opera)  :: ópera {f}
operand {n} (quantity to which an operator is applied)  :: operando
operate {v} (to perform a work or labour)  :: obrar, trabalhar
operate {v} (medicine)  :: operar
operate {v} (to operate a machine)  :: operar
operate {v}  :: operar
operating room {n} (room in a hospital used for performing surgical operations)  :: quirófano {m}
operating system {n} (software which controls computer)  :: [Portugal] sistema operativo {m}, [Brazil] sistema operacional {m}
operation {n} (method by which a device performs its function)  :: operação {f}
operation {n} (method or practice by which actions are done)  :: funcionamento {m}
operation {n} (surgical procedure)  :: operação {f}, cirurgia {f}
operation {n} (procedure for generating a value from one or more other values)  :: operação {f}
operation {n} (military campaign)  :: operação {f}
operational {adj} (determined by means of practical measures)  :: operacional
operative {adj} (based upon a surgical operation)  :: operatório
operator {n} (one who operates)  :: operador {m}
operator {n} (telecommunications operator)  :: telefonista {m} {f}
operator {n} (mathematical operator)  :: operador {m}
operator {n} (Chinese whispers) SEE: Chinese whispers  ::
operculum {n} (covering flap)  :: opérculo {m}
operetta {n} (lighter version of opera)  :: opereta {f}
ophidian {adj} (of or pertaining to Serpentes)  :: ofídico
ophidiophobia {n} (ophiophobia) SEE: ophiophobia  ::
ophiophobia {n} (fear of snakes)  :: ofidiofobia {f}
ophthalmic {adj} (of or pertaining to the eyes)  :: oftálmico
ophthalmologist {n} (eye specialist)  :: oftalmologista {m} {f}, ocuista {m} {f}, oculista {m} {f}
ophthalmology {n} (eye medicine)  :: oftalmologia {f}
ophthalmopathy {n} (eye disease)  :: oftalmopatia {f}
opination {n} (the state or process of opining)  :: opinação {f}
opine {v} (to have or express an opinion)  :: opinar
opine {v} (to state as an opinion)  :: opinar
opinion {n} (thought a person has formed about a topic)  :: opinião {f}
opinion {n} (EU: A judicial opinion by an Advocate General delivered to the European Court of Justice)  :: conclusão {f}
opinion {v} (opine) SEE: opine  ::
opinionated {adj} (holding very strong opinions)  :: opinoso, opiniático
opinionated {adj} (obstinately holding to one's opinion)  :: teimoso
opium {n} (drug from opium poppy)  :: ópio
opossum {n} (marsupial of the Didelphidae)  :: gambá {m}, cuíca {f}, opossum {m}
opponent {n} (rival)  :: oponente {m} {f}, rival {m} {f}, adversário {m}
opportune {adj} (suitable)  :: adequado {m}, apropriado {m}, conveniente {m} {f}
opportune {adj} (at a convenient time)  :: oportuno {m}
opportunism {n} (the taking of opportunities)  :: oportunismo {m}
opportunist {n} (someone who takes advantage of any opportunity)  :: oportunista {m} {f}
opportunity {n} (chance for advancement, progress or profit)  :: oportunidade {f}
opportunity {n} (favorable circumstance or occasion)  :: oportunidade {f}
oppose {v} (to attempt to stop the progression of)  :: opor
oppose {v} (to object to)  :: opor
opposite {adj} (located directly across from)  :: oposto
opposite {adj} (facing the other way)  :: oposto
opposite {adj} (of complementary or mutually exclusive things)  :: oposto
opposite {n} (contrary thing)  :: oposto {m}, contrário {m}
opposite {n} (opponent)  :: oponente {m} {f}
opposite {n} (antonym)  :: antónimo {m} [Portugal], antônimo {m} [Brazil]
opposite {adv} (in an opposite position)  :: oposto
opposite {prep} (across from)  :: na frente de
opposite sex {n} (the other gender to which one is referring)  :: sexo oposto {m}
opposites attract {proverb} (proverb)  :: os opostos se atraem
opposition {n} (action)  :: oposição {f}
opposition {n} (political)  :: oposição {f}
oppress {v} (keep down by force)  :: oprimir
oppression {n} (act of oppressing, or the state of being oppressed)  :: opressão
oppressive {adj} (tyrannical or exercising unjust power)  :: opressivo, opressor, oprimente
oppressor {n} (oppressor)  :: opressor {m}
opt {v} (to choose)  :: optar
optic {adj} (of or relating to the eye or to vision)  :: óptico, ótico [Brazil]
optic {adj} (of or relating to optics or optical instruments)  :: óptico, ótico [Brazil]
optic chiasm {n} (part of the brain)  :: quiasma óptico {m}
optic nerve {n} (nerve)  :: nervo óptico {m}, nervo ótico {m}
optical {adj} (relating to sight) SEE: optic  ::
optical {adj} (relating to optics) SEE: optic  ::
optical fibre {n} (fibre used for transmitting light)  :: fibra ótica {f}
optician {n} (a person who makes or sells lenses, spectacles)  :: oculista {m} {f}
optics {n} (physics of light and vision)  :: óptica
optimal {adj} (the best)  :: ótimo {m} [Brazil], óptimo {m} [Portugal]
optimism {n} (a tendency to expect the best)  :: otimismo {m}
optimism {n} (the doctrine that this world is the best of all possible worlds)  :: otimismo {m}
optimism {n} (the belief that good will eventually triumph over evil)  :: otimismo {m}
optimist {n} (a person who expects a favourable outcome)  :: otimista {m} {f}
optimist {n} (a believer in optimism)  :: otimista {m} {f}
optimistic {adj} (expecting a good outcome)  :: otimista {m} {f}
optimization {n} (the design and operation of a system or process to make it as good as possible in some defined sense)  :: otimização {f}
optimize {v} (to make (something) optimal)  :: otimizar
optimize {v}  :: otimizar
option {n} (one of the choices which can be made)  :: opção
optional {adj} (not compulsory)  :: opcional, facultativo
optoelectronic {adj} (pertaining to optoelectronics)  :: optoeletrônico
optoelectronic {adj} (that has both optical and electronic components)  :: optoeletrônico
optometrist {n} (person trained in examining and testing the eyes for defects)  :: oculista {m} {f}
optronic {adj} (optoelectronic) SEE: optoelectronic  ::
or {conj} (conjunction)  :: ou
or {n} (gold or yellow tincture)  :: ouro {m}
or {adj} (of yellow or gold tincture on a coat of arms)  :: ouro
or else {phrase} (as an alternative)  :: senão, caso contrário
or else {phrase} (no matter what)  :: senão
or words to that effect {phrase} (used to indicate a paraphrase)  :: ou algo assim
orach {n} (saltbush) SEE: saltbush  ::
oracle {n} (shrine to prophetic deity)  :: oráculo {m}
oracle {n} (priest through whom deity provides prophecy or advice)  :: oráculo {m}
oracle {n} (prophetic response)  :: oráculo {m}
oracle {n} (person who is a source of wisdom)  :: oráculo {m}
oracular {adj} (of or relating to an oracle)  :: oracular
oracular {adj} (prophetic, foretelling the future)  :: oracular
oral {adj} (relating to the mouth)  :: oral
oral sex {n} (stimulation of the genitals using the mouth)  :: sexo oral {m}
oralisation {n} (oralization) SEE: oralization  ::
oralise {v} (oralize) SEE: oralize  ::
orality {n} (being oral)  :: oralidade {f}
oralization {n} (the act or an act of oralizing)  :: oralização {f}
oralize {v} (to turn something written into something oral)  :: oralizar
orange {n} (tree)  :: laranjeira {f}
orange {n} (fruit)  :: laranja {f}
orange {n} (colour)  :: alaranjado {m}, cor-de-laranja {f}, laranja {m}
orange {adj} (having the colour of the fruit of an orange tree)  :: alaranjado, cor-de-laranja, laranja
orange blossom {n} (white flower of the orange tree)  :: flor de laranjeira {f}
orange juice {n} (juice of squeezed oranges)  :: suco/sumo de laranja {m}
orange peel {n} (the skin of an orange)  :: casca
orangeade {n} (orange-flavored soft drink)  :: laranjada {f}
orangeade {n} (soda water and orange juice)  :: laranjada {f}
orangish {adj} (relatively orange in color)  :: alaranjado
orangutan {n} (arboreal anthropoid ape)  :: orangotango {m}
orator {n} (someone who orates or delivers an oration)  :: orador {m}
oratorio {n} (a musical composition on a religious theme)  :: oratório {m}
oratory {n} (eloquence) SEE: eloquence  ::
oratory {n} (art of public speaking)  :: oratória {f}
orb {n} (period of time marked off by the revolution of a heavenly body) SEE: year  ::
orb {n} (circle) SEE: circle  ::
orb {n} (orbit) SEE: orbit  ::
orb {n} (spherical body)  :: orbe {m}
orb {n} (monarch's ceremonial sphere) SEE: globus cruciger  ::
orbit {n} (path of one object around another)  :: órbita {f}, círculo {m}
orbit {v} (circle another object)  :: orbitar
orbit {n} (eye socket) SEE: eye socket  ::
orbital {adj} (Of or relating to an orbit)  :: orbital
orbital {adj} (Of or relating to the eye socket (eyehole))  :: orbital
orbital cavity {n} (eye socket) SEE: eye socket  ::
orbitational {adj} (orbital) SEE: orbital  ::
orc {n} (evil monstrous humanoid creature)  :: orc
orc {n} (Orcinus orca) SEE: orca  ::
orca {n} (Orcinus orca)  :: orca {f}
orchard {n} (land for cultivation of fruit or nut trees)  :: pomar {m}
orchestra {n} (large group of musicians who play together on various instruments)  :: orquestra {f}
orchestra {n} (semicircular space in front of the stage used by the chorus in Ancient theatres)  :: orquestra {f}
orchestra {n} (the area in a theatre or concert hall where the musicians sit)  :: orquestra {f}
orchid {n} (plant)  :: orquídea {f}
orchidaceous {adj} (pertaining to orchids)  :: orquidáceo
orchidarium {n} (orchid garden)  :: orquidário {m}
ordeal {n} (a painful or trying experience)  :: calvário {m}
ordeal {n} (trial in which the accused was subjected to a dangerous test)  :: ordália {f}
order {n} (arrangement, disposition)  :: ordem {f}
order {n} (good arrangement)  :: ordem {f}
order {n} (command)  :: ordem {f}
order {n} (request for some product or service)  :: encomenda {f}, pedido {m}
order {n} (religious group)  :: ordem {f}
order {n} (society of knights)  :: ordem {f}
order {n} (awarded decoration)  :: ordem {f}
order {n} (biology: taxonomical classification)  :: ordem {f}
order {v} (to set in (any) order)  :: ordenar
order {v} (to set in (a good) order)  :: ordenar
order {v} (to issue a command)  :: ordenar
order {v} (to request some product or service)  :: encomendar, pedir
order of magnitude {n} (class of scale)  :: ordem de grandeza {f}
ordered {adj} (in order, not messy, tidy)  :: organizado
ordered field {n} (field satisfying the properties of trichotomy, transitivity and preservation of an inequality when the same element is added to both sides)  :: corpo ordenado {m}
ordered pair {n} (in set theory)  :: par ordenado {m}
ordinal {adj} (indicating position in a numerical sequence)  :: ordinal
ordinal direction {n} (intercardinal direction) SEE: intercardinal direction  ::
ordinal number {n} (grammar: word used to denote relative position in a sequence)  :: número ordinal {m}
ordinance {n} (a local law or regulation)  :: ordenança {f}
ordinarily {adv} (usually or as a general rule)  :: ordinariamente
ordinarily {adv} (in the usual manner)  :: ordinariamente
ordinary {adj} (normal, routine)  :: ordinário {m}, normal
ordinary differential equation {n} (equation)  :: equação diferencial ordinária {f}
ordinate {n} (y coordinate)  :: ordenada {f}
ordination {n} (ceremony)  :: ordenação {f}
ore {n} (rock that contains materials that can be economically extracted and processed)  :: minério {m}
oregano {n} (plant)  :: orégano {m}, orégão {m}
oregano {n} (leaves used to flavour food)  :: orégano {m}, orégão {m}
organ {n} (part of an organism)  :: órgão
organ {n} (musical instrument)  :: órgão
organ {n} (official magazine, newsletter, or similar publication)  :: publicação oficial {f}
organ donor {n} (person from whom an organ is removed)  :: doador de órgãos {m}
organelle {n} (a membrane bound compartment found within cells)  :: organela {f}
organic {adj} (pertaining to, or derived from living organisms)  :: orgânico
organic {adj} (pertaining to an organ)  :: orgânico
organic {adj} (chemistry: relating to the compounds of carbon)  :: orgânico, orgânico
organic {adj} (of food and food products: grown without agrichemicals)  :: orgânico
organic {n} (organic compound) SEE: organic compound  ::
organic chemistry {n} (chemistry of carbon containing compounds)  :: química orgânica {f}
organic compound {n} (carbon containing covalent compound)  :: composto orgânico {m}
organigram {n} (representation of a structure or organization)  :: organograma {m}
organise {v} (organize) SEE: organize  ::
organised {adj} (organized) SEE: organized  ::
organism {n} (living thing)  :: organismo {m}
organism {n} (any complex thing with properties normally associated with living things.)  :: organismo {m}
organist {n} (musician who plays the organ)  :: organista {m} {f}
organizable {adj} (able to be organized)  :: organizável {m} {f}
organization {n} (quality of being organized)  :: organização {f}
organization {n} (the way in which something is organized)  :: organização
organization {n} (group of people or other legal entities with an explicit purpose and written rules)  :: organização {f}
organization {n} (group of people consciously cooperating)  :: organização {f}
organizational {adj} (of an organization)  :: organizacional {m} {f}
organize {v} (to arrange in working order)  :: organizar
organized {adj} (characterised by efficient organization)  :: organizado
organized crime {n} (criminal organizations seen as a whole)  :: crime organizado {m}
organizer {n} (person arranging public events)  :: organizador {m}
organochlorine {n} (chlorine substituted organic compound)  :: organoclorado {m}
organoleptic {adj} (of or pertaining to sensory properties of a particular substance)  :: organoléptico
organomercury {adj} (of an organic compound, containing a carbon to mercury bond)  :: organomercúrico
orgasm {n} (the peak of sexual pleasure)  :: orgasmo {m}
orgasm {n} (orgasm) SEE: climax  ::
orgasmic {adj} (of or relating to orgasms)  :: orgástico {m}, orgástica {f}, orgásmico {m}, orgásmica {f}
orgulous {adj} (proud, haughty)  :: orgulhoso {m}
orgulous {adj} (threatening, dangerous)  :: ameaçador
orgy {n} (sexual group activity)  :: orgia {f}
orgy {n} (excessive activity)  :: orgia {f}
orient {v} (to familiarize with a situation or circumstance)  :: orientar
orient {v} (to set the focus of so as to relate or appeal to a certain group)  :: orientar
orientalism {n} (the tendency to represent eastern subjects)  :: orientalismo {m}
orientation {n} (the act of orienting)  :: orientação {f}
orientation {n} (position relative to compass bearings)  :: orientação {f}
orientation {n} (introduction to a new environment)  :: orientação {f}
orienteering {n} (racing across unfamiliar countryside using a map and compass)  :: orientação {f}
orifice {n} (orifice (see anus etc. for specific body cavities)) SEE: hole  ::
orifice {n} (mouth or aperture, as of a tube, pipe)  :: orifício {m}
origami {n} (the Japanese art of paper folding)  :: origâmi {m}
origin {n} (beginning of something)  :: origem {f}, começo {m}
origin {n} (source of a river, information, goods, etc.)  :: origem {f}, [de um rio] nascente {f}
origin {n} (point at which the axes of a coordinate system intersect)  :: origem {f}
origin {n} (ancestry)  :: origem {f}
original {adj} (relating to the origin or beginning)  :: original, originário
original {adj} (first in a series)  :: original
original {adj} (newly created)  :: original
original {adj} (fresh, different)  :: original
original {n} (object from which all later copies and variations are derived)  :: original {m}
original {n} (archasm for an excentric) SEE: eccentric  ::
original sin {n} (state of sinfulness in each human)  :: pecado original {m}
originality {n} (the quality of being original or novel)  :: originalidade {f}
originality {n} (the capacity to think independently or be inventive)  :: originalidade {f}
originality {n} (something original)  :: originalidade {f}
originate {v} (to give origin to, cause)  :: originar
originate {v} (to take first existence, have origin)  :: originar
oriole {n} (any of the various colourful passerine birds)  :: oriolo {m}
ornament {n} (element of decoration)  :: ornamento {m}, ornato {m}
ornament {n} (musical flourish)  :: ornamento {m}
ornament {v} (to decorate)  :: ornamentar, ornar, decorar
ornamentation {n} (the act or process of decorating)  :: ornamentação {f}
ornate wolf {n} (Lycaon pictus) SEE: African hunting dog  ::
ornithologist {n} (expert in ornithology)  :: ornitólogo {m}
ornithology {n} (scientific study of birds)  :: ornitologia {f}
ornithophobia {n} (fear, dislike, or hate of birds)  :: ornitofobia {f}
ornithopter {n} (aircraft that flaps its wings)  :: ornitóptero {m}
orography {n} (the scientific study, or a physical description of mountains)  :: orografia {f}
orology {n} (the study of mountains)  :: orologia {f}
orphan {n} (person whose (parent or) parents have died)  :: órfão {m}, órfã {f}
orphan drug {n}  :: medicamento órfão
orphanage {n} (a residential institution for the care and protection of orphans)  :: orfanato {m}
orphanarium {n} (orphanage) SEE: orphanage  ::
orphanhood {n} (orphanhood)  :: orfandade {f}
orthoclase {n} (potassium aluminum silicate)  :: ortoclase
orthodontist {n} (orthodontic dentist)  :: ortodontista {m} {f}
orthodox {adj} (Adhering to established religious doctrine or tradition)  :: ortodoxo
orthodox {adj} (Adhering to whatever is traditional, customary, accepted)  :: ortodoxo
orthodoxy {n} (correctness in doctrine and belief)  :: ortodoxia
orthodoxy {n} (the beliefs and practices of the Eastern Orthodox Church) SEE: Orthodoxy  ::
orthoepy {n} (the correct pronunciation of words)  :: ortoepia {f}, ortoépia {f}
orthoepy {n} (the study of correct pronunciation of words)  :: ortoepia {f}, ortoépia {f}
orthogenesis {n} (the hypothesis that evolution tends toward a certain goal)  :: ortogénese {f} [Portugal], ortogênese {f} [Brazil]
orthogonal {adj} (of right angles)  :: ortogonal, perpendicular
orthography {n} (study of correct spelling)  :: ortografia {f}
orthography {n} (aspect of language study)  :: ortografia {f}
orthography {n} (method of representing a language by written symbols)  :: ortografia {f}
orthologous {adj} (having been separated by a speciation event)  :: ortólogo
orthomolecular {adj} (relating to the theory that illness is the result of chemical deficiencies)  :: ortomolecular
orthopedia {n} (orthopedics) SEE: orthopedics  ::
orthopedic {adj} (Of or relating to orthopedics)  :: ortopédico
orthopedics {n} (medicine: a branch of medicine)  :: ortopedia {f}
orthopedist {n} (orthopedic surgeon)  :: ortopedista {m} {f}
orthorexia {n} (obsession with healthy food)  :: ortorexia
orthorhombic {adj} (having three unequal axes at right angles)  :: ortorrômbico
oryx {n} (antelope)  :: órix {m}
oscillate {v} (to swing back and forth, especially if with a regular rhythm)  :: oscilar
oscillation {n} (the act of oscillating)  :: oscilação {f}
oscillator {n} (an electronic circuit used to generate a continuous output waveform)  :: oscilador {m}
oscillograph {n} (oscilloscope) SEE: oscilloscope  ::
oscilloscope {n} (electronic measuring instrument)  :: osciloscópio {m}
osculum {n} (main opening in a sponge)  :: ósculo {m}
osier {n} (plant)  :: vimeiro {m}
osier {n} (twig)  :: vime {m}
-osis {suffix} (suffix for functional disorders)  :: -ose {f}
osmium {n} (chemical element)  :: ósmio {m}
osmometer {n} (measuring device)  :: osmómetro {m} [Portugal], osmômetro {m} [Brazil]
osmoregulation {n} (homeostatic regulation of osmotic pressure)  :: osmorregulação {f}
osmosis {n} (movement of molecules)  :: osmose
osmotic {adj} (of or relating to osmosis)  :: osmótico
osmotic pressure {n} (hydrostatic pressure)  :: pressão osmótica {f}
osprey {n} (bird of prey)  :: águia-pesqueira {f}
osseous {adj} (relating to bone)  :: ósseo
ossicle {n} (small bone in the ear; auditory ossicle)  :: ossículo {m}
osso buco {n} (Italian meat dish)  :: ossobuco {m}
ossuary {n} (a place where the dead are buried)  :: ossário {m}, ossuário {m}
ostensible {adj} (meant for open display; apparent)  :: aparente
ostensible {adj} (appearing as such; professed, supposed)  :: aparente, pretenso
ostensibly {adv} (ostensibly)  :: ostensivamente {f}
ostentatious {adj} (of ostentation)  :: ostentatório
ostentatious {adj} (intended to attract notice)  :: ostentoso {m}
ostentatious {adj} (of tawdry display)  :: espalhafatoso {m}
osteoarthritis {n} (form of arthritis caused by chronic degeneration of the cartilage and synovial membrane of the joints)  :: artrose {f}
osteogenesis {n} (the formation and development of bone)  :: osteogénese {f} [Portugal], osteogênese {f} [Brazil]
osteogenesis imperfecta {n} (disease characterized by bones that easily fracture)  :: osteogénese imperfeita {f} [Portugal], osteogênese imperfeita {f} [Brazil]
osteology {n} (bone structure of a particular individual or species)  :: ossatura
osteomalacia {n} (medicine: a softening of adult bones due to inadequate mineralization)  :: osteomalacia {f}
osteomyelitis {n} (pathology: an infection of the bone)  :: osteomielite {f}
osteopathy {n} (branch of therapy)  :: osteopatia {f}
osteopenia {n} (the medical condition of having low bone density, but not low enough to be considered osteoporosis)  :: osteopenia
osteoporosis {n} (bone disease)  :: osteoporose {f}
ostracism {n} (in ancient Greece, the temporary banishment by popular vote)  :: ostracismo {m}
ostracism {n} (banishment, exclusion from community)  :: ostracismo {m}
ostracize {v} (to ban a person from Athens for ten years)  :: ostracizar
ostracize {v} (exclude someone)  :: ostracizar, excluir
ostrich {n} (large flightless bird)  :: avestruz
otaku {n} (one with an obsessive interest in something such as anime or manga)  :: otaku {m} {f}
otalgia {n} (earache) SEE: earache  ::
other {adj} (not the one previously referred to)  :: outro
other {n} (an other one)  :: outro {m}, outra {f}
other {determiner} (not the one referred to)  :: outro
other {adv} (apart from)  :: fora
other days, other ways {proverb} (other days, other ways)  :: mudam-se os tempos, mudam-se os costumes
other side {n} (afterlife) SEE: afterlife  ::
others {n} (other people)  :: (os) outros
otherwise {adv} (differently, in another way)  :: diferente, diferentemente, de outra forma/maneira, de outro jeito/modo
otherwise {adv} (under different circumstances)  :: senão
otherwise {adv} (in all other respects)  :: fora isso, no mais
otherwise {adj} (other than supposed)  :: contrário, em contrário
otherwise {adv} (or else) SEE: or else  ::
otic {adj} (related to the ear)  :: ótico
otitis {n} (inflammation of the ear)  :: otite {f}
otolaryngologist {n} (otorhinolaryngologist) SEE: otorhinolaryngologist  ::
otolaryngology {n} (medical study of the ear, nose and throat)  :: otorrinolaringologia {f}
otology {n} (the branch of medicine that deals with the ear)  :: otologia {f}
otorhinolaryngologist {n} (medical doctor of ear, nose and throat)  :: otorrinolaringologista {m} {f}
otorhinolaryngology {n} (otolaryngology) SEE: otolaryngology  ::
otter {n} (mammal)  :: lontra
ouch {interj} (expression of one's own physical pain)  :: ai, au
ouchie {n} (owie) SEE: owie  ::
oud {n} (Arabic plucked string instrument)  :: ud
ought {v} (indicating duty or obligation)  :: dever
ought {v} (indicating advisability or prudence)  :: dever
ought {v} (indicating desirability)  :: dever
ought {v} (indicating likelihood or probability)  :: dever
ounce {n} (28.3495 g)  :: onça {f}
our {determiner} (belonging to us)  :: nosso
ouroboros {n} (a serpent, dragon or worm who eats its own tail)  :: uróboro {m}
ours {pron} (that which belongs to us)  :: o nosso {m}
ourselves {pron} (reflexive: us)  :: nos, nós
ourselves {pron} (emphatic: we)  :: nós mesmos
-ous {suffix} (suffix to form adjectives)  :: -oso
oust {v} (to expel; to remove)  :: retirar, expulsar
out {adv} (away from one's usual place or not indoors)  :: fora
out {adv} (away from, at a distance)  :: longe
out {prep} (away from the inside)  :: para fora
out loud {adv} (aloud)  :: em voz alta
out of {prep} (from the inside to the outside of)  :: para fora
out of {prep} (not part of)  :: fora
out of {prep} (with the motivation of)  :: de
out of breath {prep} (breathing with difficulty)  :: ofegante
out of hand {adj} (not under control, out of control)  :: fora de controle
out of it {prep} (drunk) SEE: drunk  ::
out of nowhere {prep} (unexpectedly or unexplicably)  :: do nada, da cartola
out of sight, out of mind {proverb} (something not nearby is forgotten)  :: longe dos olhos, longe do coração, o que os olhos não veem o coração não sente
out of the blue {prep} (unexpectedly)  :: do nada (out of nowhere), da cartola (out of the top hat), à toa
out of the frying pan, into the fire {prep} (get from an already bad situation to a worse one)  :: da frigideira para o fogo
out of the ordinary {prep} (unusual; not ordinary)  :: fora do comum, fora do normal
out of thin air {adv} (from non-existent resource)  :: do nada
out of tune {prep} (not in correct musical pitch)  :: desafinado
out of work {adj} (unemployed) SEE: unemployed  ::
outbid {v} (To bid more than somebody else)  :: fazer um lance maior que outros participantes, em leilão, concorrência ou licitação
outbuilding {n} (separate building associated with a main building)  :: dependência {f}
outcast {n} (one that has been excluded from a society or system a pariah)  :: deslocado {m}, deslocada {f}, excluído {m}, excluída {f}, pária {m} {f}
outcome {n} (result)  :: resultado {m}
outdated {adj} (out of date, old-fashioned, antiquated)  :: obsoleto, ultrapassado
outdo {v} (to go beyond)  :: superar
outdoor {adj} (situated in the open air)  :: ao ar livre
outdoors {adv} (in the open air)  :: ao ar livre, a céu aberto
outer {adj} (outside)  :: externo
outer space {n} (region)  :: espaço sideral {m}
outfit {v} (to provide with)  :: equipar
outfox {v} (outsmart) SEE: outsmart  ::
outgoing {adj} (being comfortable in social settings and interactions)  :: extrovertido
outguess {v} (outsmart) SEE: outsmart  ::
outhouse {n} (outdoor toilet, see also: shithouse; latrine; toilet)  :: casinha {f}, patente {f}
outhouse {n}  :: banheiro {m}
outhouse {n} (outbuilding) SEE: outbuilding  ::
outlast {v} (to live longer than)  :: prevalecer
outlaw {n} (a fugitive from the law)  :: fora-de-lei {m} {f}
outlet {n} (vent)  :: ventilação
outlet {n} (wall socket) SEE: wall socket  ::
outlier {n} (a person or thing situated away from the main body or outside its proper place.)  :: extravagante
outline {n} (line marking the boundary of an object figure)  :: contorno {m}
outline {n} (outer shape of an object or figure)  :: contorno {m}
outline {n} (sketch or drawing in which objects are delineated in contours without shading)  :: esboço {m}
outline {n} (general description of some subject)  :: resumo {m}
outline {n} (statement summarizing the important points of a text)  :: resumo {m}, sinopse {f}
outlook {n} (place from which something can be viewed)  :: perspectiva {f}
outlook {n} (attitude, point of view)  :: ponto de vista {m}
outmoded {adj} (unfashionable)  :: demodê {mf}
outmoded {adj} (obsolete)  :: demodê {mf}, antiquado {m}, ultrapassado {m}
outnumber {v} (be more in number)  :: exceder em número [literally], disparidade
outpatient {n} (patient)  :: paciente ambulatorial {m} {f}
outpost {n} (A military post)  :: posto avançado {m}
output {n} (production; quantity produced, created, or completed)  :: produção {f}
output {n} (data sent out of the computer)  :: saída (de dados/informação) {f}
outrage {n} (atrocity)  :: atrocidade {f}
outrage {n} (offensive, immoral or indecent act)  :: ultraje {m}
outrage {n} (anger)  :: raiva {f}
outrageous {adj} (shocking)  :: ultrajante, insultuoso {cadjective}, exurbitante {ca}; ultrajante {cadjective}
outreach {n} (extent)  :: extensão {f}
outreach {n} (practice)  :: extensão {f}
outreach {n}  :: extensão {f}
outreach {v}  :: alcançar
outright {adv} (wholly)  :: completamente
outright {adv} (openly)  :: abertamente
outset {n} (initial stage of something)  :: início {m}
outside {n} (outer surface)  :: exterior
outside {n} (the space beyond some limit or boundary)  :: exterior, lado de fora {m}
outside {adj} (pertaining to the outer surface or boundary)  :: exterior, externo
outside {adj} (pertaining to beyond the outer boundary)  :: externo
outside {adv} (on or towards the outside)  :: fora, para fora
outside {adv} (outdoors)  :: fora
outside {prep} (on the outside of)  :: fora de
outside the box {prep} (beyond convention)  :: fora da caixa
outsider {n} (someone excluded)  :: marginal, forasteiro {m}
outskirt {n} (periphery)  :: periferia
outskirts {n} (the edges or areas around a city or town)  :: periferia {f} [Brazil]
outsmart {v} (to beat in a competition of wits)  :: ser mais esperto que
outsource {v} (transfer of business to a third party)  :: terceirizar
outsourcing {n} (transfer business)  :: terceirização {f}, outsourcing {m}
outstanding {adj} (standing out from others)  :: excepcional, extraordinário, destacado
outstanding {adj} (distinguished from others by its superiority)  :: excepcional, extraordinário, destacado
outstanding {adj} (projecting outwards)  :: destacado, saliente
outstanding {adj} (not settled or finished)  :: pendente
outstanding {adj} (owed as a debt)  :: pendente
outwit {v} (outsmart) SEE: outsmart  ::
ouzel {n} (Turdus merula) SEE: Eurasian blackbird  ::
oval {n} (shape like an egg or ellipse)  :: ovoide {m}
oval {adj} (oval-shaped)  :: oval, ovoide, ovalado
oval {adj} (of or pertaining to an ovum)  :: ovular
ovarian {adj} (Relating to the ovaries)  :: ovárico
ovary {n} (female organ)  :: ovário {m}
ovary {n} (botanical organ)  :: ovário {m}
oven {n} (chamber used for baking or heating)  :: forno {m}
oven glove {n} (glove designed to carry hot oven trays)  :: luva de cozinha {f}, luva de forno {f}
oven mitt {n} (oven glove) SEE: oven glove  ::
over {adj} (ended)  :: terminado, acabado, concluído
over {adv} (again)  :: de novo
over {prep} (physical positioning: on top of; above)  :: sobre
over {prep} (physical positioning: across or spanning)  :: sobre
over {prep} (physical positioning: in such a way as to cover)  :: sobre
over {prep} (math: divided by)  :: por
over {interj} (end of sentence in radio communication)  :: câmbio
over- {prefix} (above or higher)  :: sobre-, super-
over- {prefix} (superior)  :: sobre-, super-
over- {prefix} (excessively)  :: sobre-, super-
over and over {adv} (repeatedly)  :: várias e várias vezes
over here {adv} (in this place)  :: aqui,
over my dead body {prep} (absolutely not)  :: só por cima do meu cadáver, sobre o meu cadáver
over the top {adj} (beyond normal, expected, or reasonable limits; excessive; exaggerated)  :: acima do limite (normal), excessivo, exagerado
over there {adv} (in that place)  :: , ali
overact {v} (act in an exaggerated manner)  :: exagerar
overall {adj} (all-encompassing)  :: abrangente, geral
overall {adv} (generally)  :: em geral
overall {n} (protective garment worn over clothing)  :: macacão
overalls {n} (loose fitting pair of pants with a bib)  :: macacão
overarching {adj} (all-embracing)  :: onipresente
overbite {n} (malocclusion in which the upper teeth extend over the lower ones)  :: sobremordida {f}
overboard {adv} (over the edge, off a boat)  :: borda a fora, exceder
overburdened {adj} (having an excessive number of tasks to complete)  :: sobrecarregado
overcast {adj} (covered with clouds; overshadowed; darkened)  :: nublado
overcast {adj} (meteorological term)  :: encoberto
overcast {v} (to cover with cloud; to overshadow; to darken)  :: nublar
overcoat {n} (garment)  :: sobretudo {m}
overcome {v} (surmount, get the better of)  :: vencer, superar, ultrapassar
overcrowded {adj} (Containing too many occupants)  :: lotado
overdo {v} (to do too much of something)  :: exagerar
overdose {n} (excessive and dangerous dose of a drug)  :: overdose {f}, superdose {f}, overdose {f}
overdraft {n} (act of overdrawing a bank account)  :: saque a descoberto {m}
overdraught {n} (overdraft) SEE: overdraft  ::
overdue {adj} (Late; especially, past a deadline or too late to fulfill a need)  :: tardio {m}, tardia {f}
overeat {v} (eat too much)  :: empachar
overestimate {v} (to judge too highly)  :: superestimar, sobrestimar, sobre-estimar
overestimated {v} (overrated) SEE: overrated  ::
overexpression {n} (the artificial expression of a gene in increased quantity)  :: sobre-expressão {f}
overfishing {n} (excessive fishing)  :: sobrepesca {f}
overflow {n} (spillage)  :: transbordo {m}, transbordamento {m}
overflow {n} (outlet)  :: ladrão {m}
overflow {n} (computing: situation where a value exceeds the available range)  :: overflow {m}, transbordamento {m}
overflow {v} (to fill beyond the limits of)  :: transbordar
overgrazing {n} (excessive grazing to an extent that the land is damaged)  :: sobrepastoreio {m}, sobrepastagem {f}
overhaul {n} (a major repair, remake, renovation, or revision)  :: reestruturação {f}
overhead {n} (expense of a business not directly assigned to goods or services provided)  :: overhead {m}
overhead fan {n} (ceiling fan) SEE: ceiling fan  ::
overhead projector {n} (projector that projects an image over the heads of the viewers onto a screen)  :: retroprojetor {m}
overhear {v} (To hear something that wasn't meant for one's ears)  :: ouvir/escutar por acaso/sem querer
overheat {v} (overheat) SEE: burn  ::
overheat {v} (to heat excessively)  :: sobreaquecer
overheat {v} (to become excessively hot)  :: rescaldar, sobreaquecer
overjet {n} (the extent of horizontal overlap of the maxillary central incisors)  :: sobressaliência {f}
overlap {v} (to extend over and partly cover something)  :: sobrepor, cobrir
overlap {v} (have DNA parts in common)  :: sobrepor-se
overlapping {adj} (pertaining to things which overlap)  :: superposto, sobreposto
overlapping {n} (the situation in which things overlap)  :: sobreposição {f}
overlay {v} (overwhelm) SEE: overwhelm  ::
overload {v} (to load excessively)  :: sobrecarregar
overlook {n} (vista or point)  :: vista {f}, mirante {m}
overlook {v} (to fail to notice; to look over and beyond (anything) without seeing it)  :: desperceber
overlook {v} (to pretend not to have noticed; to pass over without censure or punishment)  :: deixar passar
overly {adv} (to an excessive degree)  :: exagerada {f}
overmatch {n} (a match)  :: batalha {f} perdida
overmorrow {adv} (on the day after tomorrow) SEE: day after tomorrow  ::
overmorrow {n} (day after tomorrow) SEE: day after tomorrow  ::
overnight {adv} (throughout the night)  :: durante a noite
overnight {adv} (during a single night)  :: em uma noite
overnight {adv} (in a very short amount of time)  :: de um dia para o outro
overnight {adj} (during a single night)  :: noturno
overnight {v} (stay overnight)  :: pernoitar
overnight {n} (overnight stay)  :: pernoite {m}, pernoitada {f}, pernoita {f}, pernoitamento {m}
overnourished {adj} (overweight) SEE: overweight  ::
overpass {n} (A section of a road or path that crosses over an obstacle, especially another road, railway, etc)  :: viaduto {m}
overpopulation {n} (when the number of occupants of an area exceeds the ability of that area to provide for the occupants)  :: superpopulação {f}
overpower {v} (overpower) SEE: compel  ::
overrate {v} (to esteem too highly)  :: sobrestimar, superestimar
overrated {adj} (rated too highly)  :: sobrestimado
override {v} (to counteract the normal operation of something)  :: sobrepor
override {v} ((software) To define a new behaviour of a method)  :: sobrepor
overrun {v} (to infest, swarm over)  :: infestar
overseas {adj} (abroad)  :: do exterior
overseas {adj} (across a sea)  :: ultramarino
overseas {adv} (abroad)  :: no exterior
oversee {v} (to survey, look at something in a wide angle)  :: sondar
oversee {v} (to supervise, guide, review or direct the actions of a person or group)  :: supervisionar
oversee {v} (to see secretly or unintentionally)  :: vigiar
overseer {n} (one who oversees)  :: feitor
overshadow {v} (to dominate something and make it seem insignificant)  :: eclipsar, ofuscar
oversight {n} (omission)  :: descuido {m}
oversight {n} (supervision)  :: superintendência {f}, chefia {f}, monitoração, acompanhamento, supervisão
oversleep {v} (to sleep for longer than planned)  :: dormir demais
overtake {v} (to pass a more slowly moving object)  :: ultrapassar
overthrow {v} (to bring about the downfall of)  :: derrocar, derrubar
overtime {n} (worktime)  :: hora extra {f}
overtime {n} (pay for overtime work)  :: hora extra {f}
overtly {adv} (openly)  :: abertamente, declaradamente
overture {n} (musical introduction)  :: abertura {f}
overturn {v} (to turn over, capsize)  :: capotar
overturn {v} (legal: to reverse, overrule)  :: anular, derrubar
overview {n} (brief summary, as of a book or a presentation)  :: visão geral {f}, breve resumo {m}
overweight {adj} (of a person, heavier than is healthy)  :: com excesso de peso, sobrepeso
overwhelm {v} (engulf, surge-over)  :: engolir
overwhelm {v} (to overpower, crush)  :: dominar, esmagar, avassalar
overwhelm {v} (overpower emotionally)  :: dominar
overwhelming {adj} (overpowering)  :: irresistivelmente forte, exageradamente maior, esmagador, avassalador
oviduct {n} (duct through which an ovum passes)  :: oviduto {m}
ovulation {n} (release of an ovum from the ovary)  :: ovulação {f}
ovum {n} (gamete)  :: óvulo {m}
owe {v} (to be under an obligation)  :: dever
owe {v} (to be in debt)  :: dever
owie {n} (minor injury)  :: dodói
owing {adj} (still to be paid)  :: devendo
owing to {prep} (because of)  :: devido a
owl {n} (a bird)  :: coruja {f}, estrige {f}
owlish {adj} (resembling or characteristic of an owl)  :: corujento
own {v} (defeat) SEE: defeat  ::
own {v} (have rightful possession of)  :: possuir
own {adj} (belonging to (determiner))  :: próprio
own goal {n} (goal scored by player against their own team)  :: gol contra {m}
own up {v} (to confess)  :: confessar, assumir, confessar que, admitir
owner {n} (one who owns)  :: proprietário {m}, dono {m}
ownership {n} (legal status)  :: propriedade {f}, possessão {f}
ox {n} (an adult castrated male of cattle)  :: boi {m}
ox {n} (any bovine animal used as a beast of burden)  :: boi {m}
oxalic acid {n} (the dicarboxylic acid (ethandioic acid))  :: ácido oxálico {m}
oxbow lake {n} (crescent-shaped lake)  :: braço morto
oxcart {n} (cart drawn by ox)  :: carro de bois {m}
oxidation {n} (combination of a substance with oxygen)  :: oxidação
oxidation {n} (chemical reaction)  :: oxidação {f}
oxidative {adj} (Relating to oxidation)  :: oxidativo
oxide {n} (binary compound of oxygen)  :: óxido {m}
oxidization {n} (oxidation) SEE: oxidation  ::
oxidize {v} (to combine with oxygen)  :: oxidar
oxidize {v} (to increase the valence)  :: oxidar
oxidize {v} (to coat something with an oxide)  :: oxidar
oxidize {v} (to become oxidized)  :: oxidar
oxtail {n} (meat from the tail of a cow)  :: rabo de touro {m}, [Brazil] rabada {f}
oxyacid {n} (an acid containing oxygen)  :: oxiácido {m}
oxygen {n} (chemical element)  :: oxigénio {m} [Portugal], oxigênio {m} [Brazil]
oxygen cylinder {n} (gas cylinder containing oxygen)  :: cilindro de oxigênio {m}
oxygen tank {n} (cyllinder holding oxygen)  :: tanque de oxigênio
oxygenation {n} (process of treating something with oxygen)  :: oxigenação {f}
oxymoron {n} (figure of speech)  :: oxímoro {m}, oximoro
oxymoron {n} (contradiction in terms) SEE: contradiction in terms  ::
oxytone {adj} (oxytone)  :: oxítono
oxytone {n} (word with the stress or an acute accent on the last syllable)  :: oxítona {f}
oyster {n} (mollusk, see also: clam; mollusc; mussel)  :: ostra {f}
oyster {n} (food)  :: marisco {m}
oyster sauce {n} (sauce from oysters)  :: molho de ostras/ostra {m}
oystercatcher {n} (bird)  :: ostraceiro {m}
oysterman {n} (person who cultivates, harvests or sells oysters)  :: ostricultor {m}, ostreicultor {m} ostreiro {m}
ozone {n} (O3)  :: [Brazil] ozônio {m}, [Portugal] ozono {m}
ozone layer {n} (a region of the stratosphere)  :: [Brazil] camada de ozônio {f}, [Portugal] camada de ozono {f}