User:Matthias Buchmeier/es-en-o

Definition from Wiktionary, the free dictionary
Jump to: navigation, search
ó {conj}  :: obsolete spelling of o
ò {conj}  :: obsolete spelling of o
{suffix}  :: A suffix indicating the third-person singular indicative preterite of a verb
óbice {m}  :: obstacle
óbito {m}  :: death, passing
óblast {m}  :: oblast
óleo {m}  :: oil
ómicron {f}  :: omicron; the Greek letter Ο, ο
ómnibus {m}  :: public bus
-ón {suffix} [chemistry]  :: ending of every chemical element belonging only to the noble gases group, except helium (in spanish helio)
-ón {suffix}  :: emphasizes contempt for subject
-ón {suffix}  :: emphasizes that something is large, grand, intense, important
-ón {suffix}  :: for few cases, indicates that something is used wrong or frequently (forming adjectives and or nouns)
-ón {suffix}  :: forms a noun from a different (usually larger) but related or similar one
-ón {suffix}  :: for very few cases, indicates small size of or a lack of something (such as an ironic augmentative)
-ón {suffix}  :: indicates that someone or something has large attributes, or larger than usual
-ón {suffix} [nuclear physics]  :: ending of most or every subatomic particle
-ón {suffix}  :: suffixed to verbs, doing something repeatedly or often
ónfalos {m}  :: omphalos
ónice {m}  :: alt form of ónix
-ónimo {suffix}  :: -onym
ónix {m}  :: onyx
o {conj}  :: either ... or
o {conj}  :: or
o {f}  :: Name of the letter O
-o {suffix}  :: suffix indicating the first-person singular present indicative of verbs
O {abbr}  :: abbreviation of oeste; west
O {letter}  :: The 16th letter of the Spanish alphabet
OA {abbr}  :: Oaxaca (Mexican state)
oasis {m}  :: oasis
Oaxaca {prop}  :: Oaxaca (placename)
oaxaqueño {adj}  :: Of or pertaining to the Mexican state of Oaxaca
Obama {prop}  :: Spanish surname
obcecación {f}  :: stubbornness, willful blindness
obcecado {adj}  :: stubborn, obsessed
obducción {f} [geology]  :: obduction
obedecer {v}  :: to be because of
obedecer {v}  :: to obey
obedecible {adj}  :: obeyable
obediencia {f}  :: obedience
obediente {adj}  :: obedient
obedientemente {adv}  :: obediently
obelisco {m}  :: obelisk
obenque {m} [nautical]  :: shroud
obesa {f}  :: An obese woman
obesidad {f}  :: obesity (state of being obese)
obeso {adj}  :: obese
obeso {f}  :: An obese person
obispado {m}  :: bishopric
obispal {adj}  :: episcopal
obispo {m}  :: bishop
obituario {m}  :: obituary
objeción {f}  :: objection
objetar {v}  :: to object
objetivable {adj}  :: objective (based on facts)
objetivamente {adv}  :: objectively
objetividad {f}  :: objectivity
objetivo {adj}  :: objective
objetivo {m}  :: aim
objeto {m}  :: object
objeto {m}  :: objective; goal
objetor {f}  :: conscientious objector
objetor {f}  :: objector
objetora {f}  :: feminine noun of objetor
objetora de conciencia {f}  :: feminine noun of objetor de conciencia
objetor de conciencia {f}  :: conscientious objector
objeto volador no identificado {m}  :: unidentified flying object (all senses)
objetual {adj}  :: objectual
oíble {adj}  :: audible
oblea {f}  :: wafer (biscuit or in electronics)
oblicuo {adj}  :: oblique
obligación {f}  :: obligation
obligadamente {adv}  :: obligatorily, necessarily, out of necessity
obligado {adj}  :: coerced, forced
obligado {adj}  :: committed
obligar {v}  :: to oblige, force, obligate
obligatoriamente {adv}  :: compulsorily
obligatoriedad {f}  :: obligatoriness
obligatorio {adj}  :: mandatory
obligatorio {adj}  :: obligatory
obliterar {v}  :: to obliterate, to null, to erase, to annihilate, to destroy completely, to eradicate
oblongo {adj}  :: oblong
obnubilar {v}  :: to daze
oboe {m} [musical instruments]  :: oboe
obra {f}  :: construction
obra {f}  :: work, usually literary or artistic
obra cinematográfica {f}  :: film or motion picture
obra de arte {f}  :: work of art, objet d'art
obra maestra {f}  :: masterpiece
obra muerta {f} [nautical]  :: topsides
obrar {v}  :: to produce
obrera {f}  :: feminine noun of obrero
obrerista {adj}  :: supporting the Labour movement
obrerista {m}  :: A support of the Labour movement
obrero {f}  :: worker
obús {m}  :: howitzer
obscenamente {adv}  :: obscenely
obscenidad {f}  :: obscenity
obsceno {adj}  :: obscene
obscurecer {v}  :: archaic spelling of oscurecer
obscuro {adj}  :: alternative form of oscuro
obsequiar {v}  :: to present
obsequio {m}  :: gift, present, offering
obsequioso {f}  :: obsequious
observable {adj}  :: observable
observación {f}  :: observation
observacional {adj}  :: observational
observador {adj}  :: observant
observador {adj}  :: observing
observador {f}  :: observer
observadora {f}  :: feminine noun of observador
observancia {f}  :: observance
observar {v}  :: to observe
observatorio {m}  :: observatory
obsesión {f}  :: obsession
obsesionado {adj}  :: obsessed
obsesionado {adj}  :: possessed
obsesionar {v}  :: to obsess
obsesionarse {vr}  :: reflexive form of obsesionar
obsesivamente {adv}  :: obsessively
obsesivo {adj}  :: obsessive
obseso {adj}  :: obsessed
obsidiana {f}  :: obsidian
obsolescencia {f}  :: obsolescence
obsolescente {adj}  :: obsolescent
obsoleto {adj}  :: obsolete, outdated
obstaculización {f}  :: obstruction, hindering
obstaculizar {v}  :: to get in the way
obstante {adj}  :: hindering
obstante {adj}  :: obstructing
obstar {v}  :: to hinder
obstáculo {m}  :: obstacle
obstetra {m} [medicine]  :: obstetrician (physician who specialises in childbirth)
obstetricia {f}  :: obstetrics
obstinación {f}  :: obstinacy
obstinadamente {adv}  :: obstinately
obstinado {adj}  :: stubborn
obstinar {v}  :: to be obstinate
obstrucción {f}  :: obstruction
obstruccionista {adj}  :: obstructionist
obstruccionista {m}  :: obstructionist
obstruir {v}  :: to obstruct
obtención {f}  :: acquisition, obtaining
obtener {v}  :: to obtain
obtenible {adj}  :: obtainable
obtuso {adj} [geometry]  :: obtuse
obtuso {adj}  :: obtuse (blunt)
obtuso {adj}  :: obtuse (intellectually dull)
obus {m}  :: howitzer
obviamente {adv}  :: obviously
obviar {v}  :: to avoid
obviar {v}  :: to obviate
obviedad {f}  :: obviousness
obviedad {f}  :: Something that is obvious
obvio {adj}  :: obvious, clear
Oc {interj} [colloquial, texting, Internet slang]  :: K., OK
oca {f}  :: goose
oca común {f}  :: wild goose (Ansar ansar)
océano {m}  :: ocean
océano Antártico {prop}  :: Antarctic Ocean (placename)
océano Atlántico {prop}  :: Atlantic Ocean (the ocean lying between the Americas to the west and Europe and Africa to the east)
océano Índico {prop}  :: Indian Ocean
océano Pacífico {prop}  :: Pacific Ocean
océano Ártico {prop}  :: Arctic Ocean (placename)
ocarina {f}  :: ocarina
ocasión {f}  :: occasion
ocasional {adj}  :: occasional
ocasionalmente {adv}  :: occasionally
ocasionar {v}  :: to cause
ocaso {m} [geography]  :: west
ocaso {m} [literary]  :: decline
ocaso {m}  :: sunset
occidental {adj}  :: western
occidentalización {f}  :: westernization
occidentalizar {v}  :: to westernize
occidente {m}  :: west, occident
occiduo {adj} [poetic, literary]  :: Western, occidental
occipital {adj} [anatomy]  :: occipital
occipital {m}  :: (muscle) occipitalis
occipital {m}  :: occipital bone
occipital {m}  :: occipital lobe
occipitofrontal {adj} [anatomy]  :: occipitofrontal
occipitofrontal {m}  :: occipitofrontalis, occipitofrontalis muscle
occipucio {m} [anatomy]  :: occiput
occitana {f}  :: feminine noun of occitano
occitano {adj}  :: Of or relating to Occitania or the Occitan language
occitano {f}  :: Person from or inhabitant of Occitania
occitano {m}  :: Occitan (the Romance language)
Oceanía {prop}  :: Oceania
oceanógrafo {f}  :: oceanographer
oceanográfico {adj}  :: oceanographic
ocelo {m} [zoology]  :: eye (mark on an animal resembling an eye)
ocelo {m} [zoology]  :: the eye of arthropods
ocelote {m}  :: ocelot
oceánico {adj}  :: oceanic
ochenta {cardinal num} [cardinal]  :: eighty
ochentavo {adj}  :: eightieth
ochenta y cinco {num}  :: eighty-five
ochentero {adj} [attributive]  :: 1980s
ochentero {f}  :: Someone born in the 1980s
ochentista {adj} [attributive]  :: eighties (relating to the 1980s, 1880s etc.)
ocho {cardinal num} [cardinal]  :: eight
ocho {m}  :: eight
Ochoa {prop}  :: Spanish surname
ochocientas {num}  :: feminine form of ochocientos
ochocientos {num}  :: eight hundred
ocio {m}  :: diversion
ocio {m}  :: leisure, recreation, spare time
ociosamente {adv}  :: idly
ociosidad {f}  :: idleness, inactivity
ocioso {adj}  :: idle
ocioso {f}  :: idler
ocla {f}  :: seaweed
oclocracia {f}  :: ochlocracy
oclocrático {adj}  :: ochlocratic
ocluir {v} [medicine]  :: to occlude
oclusivo {adj}  :: occlusive
ocote {m} [El Salvador, Guatemala, Honduras, Mexico, Nicaragua]  :: Any of several aromatic, resinous pine species native to Mexico and Central America, especially the Montezuma pine (Pinus montezumae)
ocotillo {m} [Mexico]  :: ocotillo
ocra {m} [El Salvador]  :: okra
ocre {m}  :: ochre
octaédrico {adj}  :: octahedral
octaedro {m} [geometry]  :: octahedron
octagonal {adj}  :: octagonal
octanaje {m}  :: octane rating
octano {m} [organic compound]  :: octane
octanoato {m} [organic chemistry]  :: octanoate
octava {f} [music]  :: octave
octavilla {f}  :: Piece of paper of size 11 × 16 cm, half that of a cuartilla
octavilla {f} [poetry]  :: A poem of eight lines consisting of two redondillas which share rhymes
octavilla {f} [politics]  :: leaflet, flyer
Octavio {prop}  :: male given name
octavo {adj}  :: eighth
octavo {m}  :: eighth
octeto {m}  :: octet
octágono {adj}  :: alternative form of octógono
octágono {m}  :: alternative form of octógono
octógono {adj}  :: octagonal
octógono {m}  :: octagon
octillizo {m}  :: octuplet
octingentésimo {adj}  :: eight hundredth
octocoral {m}  :: octocoral
octodecágono {m} [geometry]  :: octadecagon
octogenario {adj}  :: octogenarian
octogenario {m}  :: octogenarian
octogonal {adj}  :: alternative form of octagonal
octogésimo {adj} [ordinal]  :: eightieth
octogésimo {f}  :: eightieth
octópodo {adj}  :: octopod (eight-legged)
octópodo {m}  :: octopod
octubre {m}  :: October
ocular {adj}  :: ocular
ocular {m}  :: eyepiece, eyeglass
ocularmente {adv}  :: ocularly, visually, through the use of sight
ocultación {f}  :: occultation
ocultamiento {m}  :: hiding, concealment
ocultar {v}  :: to hide
ocultarse {v}  :: to be hidden
ocultarse {v}  :: to hide
ocultista {m}  :: occultist
oculto {adj}  :: occult
ocupación {f}  :: occupation (all senses)
ocupacional {adj}  :: occupational
ocupado {adj}  :: busy
ocupado {adj}  :: occupied
ocupadísimo {adj}  :: superlative form of ocupado
ocupante {adj}  :: occupying
ocupante {m}  :: occupant
ocupar {vr}  :: to go about
ocupar {vr}  :: to pay attention to
ocupar {v}  :: to employ
ocupar {v}  :: to occupy
ocupar {v}  :: to use
ocurrencia {f}  :: occurrence
ocurrente {adj}  :: occurrent
ocurrente {adj}  :: saying, meaning, showing or doing unexpected things
ocurrir {v}  :: to happen, to occur
oda {f}  :: ode
odalisca {f}  :: odalisque
Odesa {prop}  :: Odessa (placename)
Odessa {prop}  :: alternative form of Odesa
odiar {v}  :: to hate
odiarse {vr}  :: reflexive form of odiar
odio {m}  :: hate
odioso {adj}  :: hateful, odious
odisea {f}  :: odyssey
Odisea {prop}  :: Odyssey
Odiseo {prop} [mythology]  :: Odysseus
Odín {prop}  :: Odin
oído {m}  :: ear (especially the inner parts)
oído {m}  :: hearing
odonato {m}  :: odonate
odontalgia {f} [medicine]  :: toothache
odontóloga {f}  :: feminine noun of odontólogo
odontólogo {f}  :: odontologist; dentist
odontología {f}  :: odontology; dentistry
odorífero {adj}  :: odorous, odoriferous
odorífero {adj}  :: smelly
OEA {initialism}  :: Organización de los Estados Americanos: OAS
oeste {m}  :: west
Ofelia {prop}  :: female given name, equivalent to Ophelia
ofenda {f}  :: insult
ofender {v}  :: to offend
ofenderse {vr}  :: reflexive form of ofender
ofendido {adj}  :: aggrieved
ofensa {f}  :: insult
ofensa {f}  :: offense
ofensiva {f}  :: offensive
ofensividad {f}  :: offensive (attacking play)
ofensivo {adj}  :: offensive
oferente {m}  :: provider (of a service)
oferta {f}  :: offer
ofertante {m}  :: bidder
ofertar {v}  :: to offer
offshore {adj}  :: offshore
oficial {adj}  :: official
oficial {m}  :: artisan
oficial {m}  :: butcher
oficial {m}  :: clerk, functionary
oficial {m}  :: executioner
oficial {m}  :: officer, official
oficial {m}  :: office worker, skilled workman
oficialidad {f}  :: officiality
oficialismo {m}  :: ruling party
oficialista {adj}  :: pro-government
oficialista {m}  :: pro-government supporter
oficialización {f}  :: officialisation
oficializar {v}  :: to make official
oficialmente {adv}  :: officially
oficiante {m}  :: officiant
oficiar {v}  :: to officiate
oficina {f}  :: laboratory
oficina {f}  :: office
oficina {f}  :: workshop
oficinista {m}  :: office worker
oficio {m}  :: profession, occupation
oficiosamente {adv}  :: officiously
oficiosamente {adv}  :: unofficially
oficioso {adj}  :: unofficial
ofidio {adj}  :: ophidian
ofidio {m}  :: ophidian
ofiolita {f} [geology]  :: ophiolite
ofiura {f}  :: brittlestar
ofrecer {v}  :: to offer
ofrecerse {vr}  :: reflexive form of ofrecer
ofrecido {adj}  :: easy (A person who readily consents to sexual activity)
ofrecimiento {m}  :: offering, offer
ofrenda {f}  :: offering, sacrifice
ofrendar {v}  :: to offer as a gift, to sacrifice
oftalmóloga {f}  :: (female) ophthalmologist
oftalmólogo {f}  :: ophthalmologist
oftalmológico {adj}  :: ophthalmological
oftalmología {f}  :: opthalmology
oftalmoscopio {m}  :: ophthalmoscope
ofuscación {f}  :: bewilderment, confusion
ofuscación {f}  :: blurring
ofuscación {f}  :: obfuscation (lack of clarity)
ofuscar {v}  :: to confuse
ofuscar {v}  :: to obfuscate
ofuscar {v}  :: to wow, astonish
ogaño {adv}  :: rare spelling of hogaño
oglala {m}  :: Oglala Lakota tribe member
OGM {initialism}  :: (organismo genéticamente modificado) GMO
ogro {m}  :: crank
ogro {m}  :: fiend, brute
ogro {m}  :: ogre
oh {interj}  :: oh (expression of awe, surprise, pain or realization)
oh, Dios mío {phrase}  :: oh my God
Ohio {prop}  :: Ohio
ohmio {m}  :: ohm
-oico {suffix} [organic chemistry]  :: -oic
-oide {suffix}  :: -oid
oidor {f} [archaic]  :: judge, magistrate for a royal audiency
oidor {f}  :: hearer
oidora {f}  :: feminine noun of oidor
oiga {interj}  :: hey
ojalá {adv}  :: hopefully (I hope that)
ojalá {interj}  :: God grant (that) (followed by present subjunctive)
ojalá {interj}  :: God willing
ojalá {interj}  :: I hope so; let’s hope so
ojalá {interj}  :: I hope (that); let’s hope (that) (followed by present subjunctive)
ojalá {interj}  :: I wish (when used to refer to past events)
ojalá {interj}  :: let's hope that
ojal {m}  :: buttonhole
ojal {m}  :: loop
ojeada {f}  :: glance (brief look)
ojeador {m} [hunting]  :: beater
ojeador {m} [sport]  :: scout, talent scout
ojear {v}  :: to glance
ojear {v}  :: to ogle
ojear {v}  :: to put the evil eye (on somebody), to curse by looking with malicious intents
ojera {f} [eyes, skin]  :: coon eyes
ojera {f}  :: ring or bag under the eye
ojeriza {f}  :: grudge
ojeriza {f}  :: spite, ill feeling
ojete {m} [Argentina]  :: anal orifice
ojete {m} [colloquial]  :: anus
ojete {m}  :: eye hole
ojete {m}  :: eyelet, grommet
ojete {m} [Mexico]  :: wicked, mean, bad person
ojete {m} [slang as epithet]  :: asshole
ojialegre {adj}  :: laughing-eyed
ojimoreno {adj}  :: dark-eyed, brown-eyed
ojinegro {adj}  :: dark-eyed, black-eyed
ojiplático {adj}  :: agog, wide-eyed
ojito {m}  :: diminutive form of ojo
ojituerto {adj}  :: cross-eyed, cock-eyed
ojiva {f}  :: ogive
ojiva {f}  :: warhead
ojón {adj}  :: Having big or very open eyes
ojón {f}  :: A particular fish, having very large eyes
ojón {f}  :: Someone with big or very open eyes
ojo {interj}  :: look! watch out!
ojo {m}  :: eye
ojo de agua {m}  :: spring (place where water emerges from the ground)
ojo por ojo, diente por diente {phrase}  :: eye for an eye, a tooth for a tooth
ojos que no ven, corazón que no siente {proverb}  :: out of sight, out of mind
ojota {f} [Chile, Argentina, Peru]  :: flip-flop (artisanal type)
ojudo {adj} [El Salvador, Honduras]  :: with big eyes
Oklahoma {prop}  :: Oklahoma
okupa {m} [slang, Spain]  :: squatter; squat
okupación {f} [slang, Spain]  :: squatting
okupado {adj} [slang, Spain]  :: squatted
okupar {v} [slang, Spain]  :: to squat
olé {interj}  :: An expression of encouragement and approval
ola {f} [figuratively]  :: sudden appearance of a large amount of something
ola {f}  :: wave (on the surface of a liquid)
ola de calor {f}  :: heat wave, hot spell
olalia {f}  :: olallieberry
olíbano {m}  :: frankincense
oleada {f}  :: wave
oleaginoso {adj} [of a plant]  :: producing oily fruit
oleaginoso {adj}  :: oleaginous (oily)
oleaje {m} [hydrography]  :: surf
oleato {m}  :: oleate
oleícola {adj} [attributive]  :: olive oil
olefina {f} [organic chemistry]  :: olefin
oleico {adj}  :: oleic
oleicultura {f}  :: olivegrowing and olive oil production
Oleksandr {prop}  :: Oleksandr (transliteration of Олександр)
oleoducto {m}  :: oil pipeline
oleoplasto {m} [cytology]  :: oleoplast
oler {vi}  :: to smell, to emit an odour
oler {vt}  :: to smell, to perceive by scent
olerse la tostada {v} [idiomatic]  :: to smell a rat
oleuropeína {f} [organic compound]  :: oleuropein
oleyliberi {f}  :: olallieberry
olfatear {v}  :: to sniff
olfativo {adj}  :: olfactory
olfato {m}  :: smell, olfaction, sense of smell (sense that detects smells)
olfatorio {adj}  :: olfactory
Olga {prop}  :: female given name
oligarca {m}  :: oligarch (a member of an oligarchy)
oligarquía {f}  :: oligarchy
oligisto {m} [obsolete, mineral]  :: hematite
oligoelemento {m}  :: trace element
oligonucleótido {m} [biochemistry]  :: oligonucleotide
oligopolio {m}  :: oligopoly
oligopolístico {adj}  :: oligopolistic
oligoqueto {m}  :: oligochaete
oligosacárido {m} [carbohydrate]  :: oligosaccharide
olimpíada {f}  :: olympiad
olimpíada {f}  :: Olympics
olimpiada {f}  :: olympiad
olimpismo {m}  :: Olympism
olimpo {m}  :: hall of fame
Olimpo {prop}  :: Olympus
olingo {m}  :: olingo
olinguito {m}  :: olinguito
olio {m}  :: alternative spelling of óleo
olisquear {v}  :: to sniff at
oliva {f}  :: olive (fruit)
oliva {f}  :: olive tree
oliva {f}  :: owl
olivar {adj}  :: olive color
olivar {m}  :: olive grove
olivarero {adj} [attributive]  :: olive
olivarero {f}  :: olivegrower
olivino {m}  :: olivine (family of minerals)
olivo {m}  :: olive tree
olla {f}  :: a pool, a whirlpool
olla {f}  :: a pot or pan; a kettle
olla {f}  :: a stew
ollada {f} [Central America]  :: the content of a pot
olluco {m}  :: Ullucus tuberosus, the ulluco
olmeca {adj}  :: Olmec
olmeca {m}  :: Olmec
olmo {m}  :: elm
olímpicamente {adv}  :: completely, utterly, epically
olímpico {adj}  :: Olympic (pertaining to Mount Olympus)
olímpico {adj}  :: Olympic (pertaining to the Olympics)
olímpico {adj}  :: utter, total, epic
olímpico {f}  :: Olympian
olor {m}  :: smell, scent
olorcillo {m}  :: whiff (faint smell)
oloroso {adj}  :: odorous
oloroso {adj}  :: sweet (having a pleasant smell)
olote {m} [Central America, Mexico]  :: corncob
Oltenia {prop}  :: Oltenia (placename)
olívico {adj}  :: From Vigo, Spain
olívico {f}  :: Someone from Vigo, Spain
olvidable {adj}  :: forgettable
olvidadizo {adj}  :: forgetful
olvidado {adj}  :: forgotten
olvidar {v}  :: to forget
olvido {m}  :: forgetting, ending of memory
olvido {m}  :: Idea meaning an abstract place to put what is wanted to be forgotten
olvido {m}  :: oblivion
-oma {suffix} [pathology]  :: -oma
omaní {adj}  :: Omani
omaní {m}  :: Omani
Omar {prop}  :: male given name
omaso {m}  :: omasum
omatidio {m} [zoology]  :: ommatidium
ombú {m}  :: A large evergreen tree native to the Pampa of South America, Phytolacca dioica
ombligo {m}  :: navel (remnant of umbilical cord)
ombre {m}  :: obsolete spelling of hombre
ombrófilo {adj}  :: ombrophilous
ombrotrófico {adj}  :: ombrotrophic
OMC {prop}  :: initialism of Organización Mundial de Comercio (WTO (World Trade Organisation))
omega {f}  :: omega; the Greek letter Ω, ω
OMG {initialism}  :: alternative form of OGM
ominar {v}  :: to omen
ominosamente {adv}  :: ominously
ominoso {adj}  :: ominous
omisión {f}  :: omission
omiso {adj}  :: neglectful, careless
omitir {v}  :: to omit
Omán {prop}  :: Oman (country in the Middle East)
omnipotencia {f}  :: omnipotence (unlimited power)
omnipotente {adj}  :: omnipotent
omnipresencia {f}  :: omnipresence
omnipresente {adj}  :: omnipresent
omnisapiente {adj}  :: omniscient
omnisciencia {f}  :: omniscience
omnisciente {adj}  :: omniscient
omoplato {m}  :: alt form of omóplato
omóplato {m}  :: scapula
OMS {initialism}  :: Organización Mundial de la Salud; WHO
-on {suffix}  :: forming nouns and adjectives from nouns, adjectives and verbs, with augmentative, intensive or expressive meaning
-on {suffix} [physics, and, biology]  :: -on
-ona {suffix}  :: feminine noun of -ón
onagro {m}  :: onager (military engine)
onagro {m}  :: onager (wild ass)
onanista {adj}  :: onanistic
onanista {m}  :: onanist
once {cardinal num} [cardinal]  :: eleven
once {f} [Latin American Spanish]  :: snack (bread with tea or coffee)
onceavo {adj}  :: eleventh
onceavo {m}  :: eleventh
oncóloga {f}  :: feminine noun of oncólogo
oncólogo {f}  :: oncologist (one who specialises in oncology)
oncocercosis {f}  :: onchocerciasis
oncológico {adj}  :: oncological
oncología {f}  :: oncology (branch of medicine)
onda {f}  :: Any other wave (including technological use)
onda {f} [Chile]  :: style, fashion
onda {f}  :: vibe or mood
onda {f}  :: wave (on the surface of a liquid)
onda acústica {f}  :: sound wave
onda de calor {f}  :: heatwave
onda electromagnética {f}  :: electromagnetic wave
onda senoidal {f} [trigonometry]  :: sine wave
onda sonora {f}  :: sound wave
onda verde {f}  :: green wave
ondear {v}  :: to flutter, flap
ondear {v}  :: to undulate
ondear {v}  :: to wave
ondulación {f}  :: permanent wave, perm (hairstyle)
ondulación {f} [physics]  :: permanent wave
ondulación {f}  :: undulation
ondulante {adj}  :: waving, undulating
ondular {v}  :: to wave
ondulatorio {adj}  :: undulating
ondulatorio {adj}  :: wave (attributive, physics)
oneroso {adj}  :: onerous
ONG {initialism}  :: NGO (non-governmental organisation)
onicomicosis {f}  :: onychomycosis
online {adj}  :: online
onomatopeya {f}  :: onomatopoeia
onomatopéyico {adj}  :: onomatopoeic
onírico {adj} [attributive]  :: dream
onírico {adj}  :: oneiric
onsen {m}  :: onsen
ONT {initialism}  :: abbreviation of Organización Nacional de Transplantes
ontogenia {f}  :: ontogeny
ontogenético {adj} [biology]  :: ontogenetic, ontogenic
ontológicamente {adv}  :: ontologically
ontología {f}  :: ontology
ONU {initialism} [politics, government]  :: initialism of Organización de las Naciones Unidas (UNO (United Nations Organization))
onubense {adj}  :: of or pertaining to Huelva
onubense {m}  :: someone from Huelva
onza {f}  :: Ounce
onza {f}  :: Ounce; snow leopard
onze {num}  :: obsolete spelling of once
oolito {m} [geology]  :: oolite
oolítico {adj} [geology]  :: oolitic
oosfera {f} [botany]  :: oosphere
oospora {f} [botany]  :: oospore
ooteca {f}  :: ootheca
opacar {v}  :: to overshadow
opacidad {f}  :: opacity
opaco {adj}  :: opaque
opción {f}  :: option
opcional {adj}  :: optional
opcionalmente {adv}  :: optionally
open {m} [sports]  :: open
O.P.E.P. {prop}  :: organización de los países exportadores de petróleo, OPEC
operación {f} [computing, mathematics]  :: operation
operacional {adj}  :: operational, effective, operative
operacional {adj}  :: working
operador {f}  :: operator
operadora {f}  :: feminine noun of operador, (female) operator
operar {v}  :: to operate
operaria {f}  :: working woman
operario {f}  :: operative
operario {f}  :: workman
operarse {vr}  :: reflexive form of operar
operatividad {f}  :: operativeness
operativo {adj}  :: operative
operativo {m}  :: operation
opereta {f} [music]  :: operetta
operista {m}  :: opera singer
operático {adj}  :: operatic
opiáceo {adj}  :: opiate
opimo {adj}  :: rich, fertile, lush
opinante {adj}  :: opinionated, critical
opinar {v}  :: to express one's opinion; to opine
opinar {v}  :: to think; to be of the opinion
opinión {f}  :: opinion
opio {m}  :: opium
opioide {adj}  :: opioid
opioide {m}  :: opioid
opistosoma {m} [anatomy]  :: opisthosoma
oponente {m}  :: opponent
oponer {vr}  :: to be opposed, to be in opposition
oponer {vt}  :: to pit (one thing against another); to set in opposition
oponer {vt}  :: to put up (resistance etc.)
oponerse {vr}  :: to oppose one another
oponible {adj}  :: opposable (placed opposite something else)
oporto {m}  :: port wine
Oporto {prop}  :: Oporto (placename)
oportunamente {adv}  :: opportunely, timely
oportunidad {f}  :: opportunity (in both senses: “chance for advancement, progress or profit” and “favorable circumstance or occasion”)
oportunismo {m}  :: opportunism
oportunista {adj}  :: opportunistic
oportunista {m}  :: opportunist
oportuno {adj}  :: opportune
oportuno {adj}  :: suitable, appropriate
oposición {f}  :: opposition
oposición {f} [Spain]  :: public exam
opositar {v} [Spain]  :: to take the oposiciones (public exams)
opositor {adj}  :: opposition
opositor {f}  :: opponent
opresión {f}  :: oppression
opresivo {adj}  :: oppressive
opresor {f}  :: oppressor (one who oppresses)
opresora {f}  :: oppressor
oprimir {v}  :: to oppress
oprimir {v}  :: to press (e.g., a button or key on a telephone or keyboard)
oprobio {m}  :: opprobrium
oprobioso {adj}  :: opprobrious, disgraceful
ops {m}  :: acknowledgment of a minor mistake, oops
opúsculo {m}  :: opuscule, tract, short essay
opsonina {f} [biology]  :: opsonin
optar {v}  :: to opt
optativo {adj}  :: optional (left to personal choice)
optativo {m}  :: optative (mood of verbs)
optimar {v}  :: to optimize
optimismo {m}  :: optimism
optimista {adj}  :: optimistic
optimista {m}  :: optimist
optimistamente {adv}  :: optimistically
optimización {f}  :: optimisation
optimizar {v}  :: to optimize
optometría {f}  :: optometry
opuesto {adj}  :: contrary
opuesto {adj}  :: opposed
opuesto {adj}  :: opposite
opugnar {v}  :: to attack
opugnar {v}  :: to contradict, oppose
opulencia {f}  :: opulence, luxury
opulento {adj}  :: rich, wealthy, opulent
oquedad {f}  :: hollow, hollow space, cavity, hole
oquedad {f}  :: insubstantiality of speech or talk
oír {vi}  :: to hear
oír {vt}  :: to hear (passively perceive a sound)
oír {vt}  :: to heed; to listen to
oír {vt}  :: to listen to (actively pay attention to a sound or a person speaking)
oración {f}  :: clause
oración {f}  :: oration
oración {f}  :: prayer
oración {f}  :: sentence
oracular {adj}  :: oracular
orador {f}  :: orator
oradora {f}  :: feminine noun of orador
oral {adj}  :: oral
oralidad {f}  :: orality
oralmente {adv}  :: orally
orangismo {m}  :: Orangeism
orangután {m}  :: orangutan
orar {v}  :: to pray
orate {m} [pejorative]  :: A crazy person
oratoria {f}  :: oratory
oratorio {adj}  :: oratorical
orbe {m}  :: globefish
orbe {m}  :: mound (part of the regalia)
orbe {m}  :: orb
orbe {m}  :: world
orbicular {m}  :: orbicular muscle
orbicular de los párpados {m}  :: orbicularis oculi, orbicularis oculi muscle
orbital {adj}  :: orbital
orbital {m} [chemistry]  :: orbital
orbitar {v}  :: to orbit
orca {f}  :: orca, killer whale
orco {f}  :: male orca, killer whale
orco {m}  :: orc
orco {m}  :: Orcus
orco {m} [poetic]  :: hell
oráculo {m}  :: oracle
ordalía {f}  :: ordeal, trial
ordeñador {adj}  :: milking
ordeñador {f}  :: milker (person who milks)
ordeñadora {f}  :: milker, milking machine (machine which milks)
ordeñadora {f}  :: milkmaid (female milker)
ordeñar {v} [figurative, colloquial]  :: to milk (get the most advantage out of someone or something)
ordeñar {v}  :: to milk (to express milk from mammal)
orden {f} [military]  :: order
orden {f}  :: order (command)
orden {f}  :: order (decoration)
orden {f}  :: order (request, purchase, or food)
orden {f} [religion]  :: order
orden {m}  :: good behavior
orden {m} [mathematics]  :: order (highest exponent)
orden {m}  :: order (arrangement, sequence, organization)
orden {m}  :: orderliness
orden {m} [taxonomy]  :: order
ordenación {f}  :: ordination
ordenada {f}  :: ordinate
ordenadamente {adv}  :: orderly
ordenado {adj}  :: ordered
ordenador {m}  :: computer
ordenador de sobremesa {m}  :: desktop computer
ordenador portátil {m}  :: notebook (computer), laptop
ordenamiento {m}  :: legislation
ordenamiento {m}  :: ordering, arranging
ordenanza {m} [feminine only]  :: ordinance
ordenanza {m}  :: messenger
ordenanza {m}  :: orderly
ordenar {v}  :: to enjoin
ordenar {v}  :: to order
ordenar {v}  :: to sort
orden de alejamiento {f}  :: restraining order
ordeño {m}  :: milking
Ordóñez {prop}  :: Spanish surname
ordinal {adj}  :: ordinal
ordinalidad {f}  :: ordinality
ordinariamente {adv}  :: ordinarily
ordinariez {f}  :: ordinarity
ordinario {adj}  :: ordinary
Ordoño {prop}  :: male given name
orear {v}  :: to air
orebce {m} [archaic]  :: goldsmith
Oregón {prop}  :: Oregon
oreja {f}  :: ear
oreja de mar {f}  :: abalone (edible univalve mollusc)
orejas de burro {m} [nautical, idiom]  :: goose wing
orejera {f}  :: blinder (for horses)
orejera {f}  :: ear armour
orejera {f}  :: earflap
orejera {f}  :: earmuff
orejera {f}  :: earpad
orejera {f}  :: plug (jewellery for the ear)
orejota {f}  :: augmentative form of oreja
orejuela {f}  :: The earlike handle of a tray, bowl or other such utensil
orellano {adj} [archaic]  :: remote, separated
orensano {adj}  :: Of, from, or related to, Ourense
orensano {f}  :: Someone from Ourense
Orense {prop}  :: Ourense (placename)
Orense {prop}  :: Ourense (placename)
oreo {m}  :: breeze
oreo {m}  :: fresh air
oreodonte {m}  :: oreodont
orfanato {m}  :: orphanage
orfandad {f}  :: hopelessness
orfandad {f}  :: orphanage
orfebre {m}  :: goldsmith
orfebrería {f}  :: gold work, goldsmithing
Orfeo {prop} [Greek mythology]  :: Orpheus
orgía {f}  :: orgy
organdí {m}  :: organdy
organela {f}  :: organelle
organelo {m}  :: organelle
organógeno {adj}  :: organogenic
organigrama {f}  :: organization chart
organillero {m}  :: organ grinder
organillo {m}  :: street organ
organismo {m}  :: corporate body
organismo {m}  :: human body
organismo {m}  :: organism, creature
organismo {m}  :: organization, committee, body
organista {m}  :: organist
organización {f}  :: organization
organizacional {adj}  :: organizational
organizado {adj}  :: organized
organizador {m}  :: organizer
organizadora {f}  :: feminine noun of organizador
organizar {v}  :: to organize
organizarse {vr}  :: reflexive form of organizar
organizativamente {adv}  :: organizationally
organizativo {adj}  :: organizational
orégano {m}  :: oregano, pot marjoram (Origanum vulgare)
organoclorado {m} [organic chemistry]  :: organochlorine
organofosfato {m}  :: organophosphate
organogénesis {f} [biology]  :: organogenesis
organografía {f}  :: organography
organolitio {m} [organic chemistry]  :: organolithium
organometálico {adj}  :: organometallic
orgasmo {m}  :: orgasm
orgasmo múltiple {m}  :: multiple orgasm
orgiástico {adj}  :: orgiastic
orgánico {adj}  :: organic
orgánulo {m}  :: organelle
orgásmico {adj}  :: orgasmic (of or relating to orgasms)
orgullo {m}  :: pride (sense of self-worth)
orgullo {m}  :: pride (something of which one is proud)
orgullo {m}  :: pride (state of being proud)
orgullosamente {adv}  :: proudly
orgulloso {adj}  :: proud
oribe {m} [archaic]  :: goldsmith
orictognosía {f} [obsolete]  :: oryctognosy
orictología {f} [obsolete]  :: oryctology
orientación {f}  :: orientation
orientación familiar {f}  :: home teaching
orientación sexual {f}  :: sexual orientation
orientador {f}  :: school counselor
orientadora {f}  :: feminine noun of orientador
oriental {adj} [dated, Argentina]  :: Uruguayan
oriental {adj}  :: eastern
oriental {adj}  :: Oriental
orientalista {adj}  :: orientalist
orientalista {m}  :: orientalist
orientalizante {adj}  :: orientalizing
orientar {v}  :: to orient
orientarse {vr}  :: reflexive form of orientar
orientativo {adj}  :: indicative
oriente {m}  :: east
Oriente {prop}  :: Orient (countries of Asia)
Oriente Cercano {prop}  :: Near East
Oriente Medio {prop}  :: Middle East (region comprising southwest Asia and northeast Africa)
Oriente Próximo {prop}  :: Near East
orificio {m}  :: orifice
oriflama {f}  :: Oriflamme
origami {m}  :: origami
origen {m}  :: origin
original {adj}  :: original
originalidad {f}  :: originality
originalmente {adv}  :: originally
originar {v}  :: to originate
originar {vt}  :: to give rise to, to cause
originar {vt}  :: to start
originariamente {adv}  :: originally
originario {adj}  :: native
originario {adj}  :: original
orilla {f}  :: edge, border
orilla {f}  :: shore or bank of a watercourse
orillar {v}  :: to skirt
orillero {adj}  :: lower-class, common, vulgar
orillo {m}  :: selvage [US], selvedge [UK]
Orión {prop} [constellation]  :: Orion
Orión {prop} [mythology]  :: Orion
orina {f}  :: urine
orinal {m}  :: chamber pot
orinar {v}  :: to urinate
orinarse {vr}  :: reflexive form of orinar
Oriol {prop}  :: male given name
orisha {m}  :: orisha
orito {m} [Latin America]  :: A type of bright yellow, sweet miniature banana
oriunda {f}  :: feminine form of oriundo
oriundo {adj}  :: native to
oriundo {f}  :: native
orla {f} [heraldiccharge]  :: orle
orlar {v}  :: to add a border to
orlar {v}  :: to trim
orín {m}  :: rust [caused by moisture]
orín {m} [usually, in the plural]  :: urine
ornamentación {f}  :: ornamentation
ornamental {adj}  :: ornamental
ornamentar {v}  :: to adorn or ornament
ornamento {m}  :: ornament
ornar {v}  :: to adorn
ornitina {f} [amino acid]  :: ornithine
ornitisquio {m}  :: ornithischian
ornitóloga {f}  :: ornithologist
ornitólogo {f}  :: ornithologist
ornitofobia {f}  :: ornithophobia
ornitológico {adj}  :: ornithological
ornitología {f}  :: ornithology
ornitomancía {f}  :: alternative spelling of ornitomancia
ornitomancia {f}  :: ornithomancy
ornitorrinco {m}  :: platypus
ornitópodo {m}  :: ornithopod
oro {adj} [heraldry]  :: or
oro {m}  :: gold
orogénesis {f} [geology]  :: orogenesis
orografía {f}  :: orography (all senses)
orográfico {adj}  :: orographic
oro negro {m}  :: black gold
oronja {f}  :: Any of several species of fungus of the genus Amanita
oronja {f}  :: Caesar's mushroom
oronja verde {f}  :: death cap
oropel {m}  :: tinsel
oropimente {m} [mineral]  :: orpiment
oropéndola {f}  :: oriole
orozuz {m} [plant]  :: licorice
orquídea {f}  :: orchid
orquesta {f}  :: orchestra
orquestación {f}  :: orchestration
orquestal {adj}  :: orchestral
orquestar {v}  :: to orchestrate
orquestra {f}  :: orchestra
orquideario {m}  :: orchidarium
orquidectomía {f} [surgery]  :: orchidectomy
orquidióloga {f}  :: feminine noun of orquidiólogo
orquidiólogo {f}  :: orchidologist
orquidóloga {f}  :: feminine noun of orquidólogo
orquidólogo {f}  :: orchidologist
oírse {vr}  :: reflexive form of oír
Ortega {prop}  :: Spanish surname
orteguianamente {adv}  :: in such a way atypical of José Ortega y Gasset, a Spanish philosopher
orteguiano {adj}  :: Of or relating to José Ortega y Gasset, a Spanish philosopher
ortesis {f}  :: orthosis
ortógrafa {f}  :: feminine noun of ortógrafo
ortógrafo {f}  :: orthographer
ortiga {f}  :: nettle (plant)
Ortiz {prop}  :: Spanish surname
orto {m}  :: sunrise
orto {m} [vulgar, vesre, Chile, Argentina, Uruguay]  :: arse, anus
orto- {prefix}  :: ortho-
ortobirrotonda {f} [geometry]  :: orthobirotunda
ortoclasa {f} [mineral]  :: orthoclase
ortodoncia {f}  :: orthodontics
ortodoncista {m}  :: orthodontist
ortodoxia {f}  :: orthodoxy (all senses)
ortodoxo {adj}  :: orthodox
ortodoxo {adj}  :: Orthodox
ortoedro {m} [geometry]  :: cuboid
ortogneis {m} [geology]  :: orthogneiss
ortogonal {adj}  :: orthogonal
ortografía {f}  :: orthography
ortografía {f}  :: spelling (a person's ability to spell words)
ortografía {f}  :: spelling (specific way of spelling a word)
ortographía {f}  :: obsolete spelling of ortografía
ortográfico {adj}  :: orthographic
ortomolecular {adj}  :: orthomolecular
ortonitrato {m} [inorganic chemistry]  :: orthonitrate
ortopédica {f}  :: feminine noun of ortopédico
ortopédico {adj}  :: orthopedic
ortopédico {f}  :: orthopedist
ortopedia {f} [medicine]  :: orthopedics
ortopedista {m}  :: orthopedist
ortosa {f} [mineral]  :: orthoclase
ortoéster {m} [organic chemistry]  :: orthoester
ortóptero {m}  :: orthopteran
oruga {f}  :: arugula (plant)
oruga {f}  :: caterpillar (insect or vehicle)
orujo {m}  :: orujo
orujo {m}  :: The solid remains of juiced grapes or olives
orureño {adj}  :: Of, from, or in the style of the Bolivian department (region) of Oruro
orvallo {m} [Spain]  :: drizzle
orwelliano {adj}  :: Orwellian
orzuelo {m}  :: stye
os {pron}  :: you, to you, for you; dative and accusative of vosotros
osa {f}  :: she-bear, female bear
-osa {suffix} [biochemistry]  :: -ose (forms names of sugars)
-osa {suffix}  :: feminine singular form of -oso
osadía {f}  :: audacity
osadía {f}  :: boldness
osado {adj}  :: daring, bold
osamenta {f}  :: skeleton
osar {vi}  :: to dare
osario {m}  :: ossuary
osasunista {adj} [soccer]  :: Associated with Club Atlético Osasuna, a football club from Pamplona
osasunista {m} [soccer]  :: Someone associated with Club Atlético Osasuna
oscarizado {adj}  :: Oscar-winning
oscense {adj}  :: From Huesca
oscense {m}  :: Someone from Huesca
oscilación {f}  :: oscillation
oscilante {adj}  :: oscillating
oscilar {v}  :: to oscillate
osciloscopio {m}  :: oscilloscope
osco {adj}  :: Oscan
oscurantismo {m}  :: obscurantism
oscurantista {m}  :: obscurantist
oscurecer {v}  :: to darken
oscurecimiento {m}  :: darkening, dimming
oscuridad {f}  :: darkness, obscurity
oscuro {adj}  :: dark
oscurísimo {adj}  :: superlative form of oscuro
o sea {adv} [informal]  :: I mean; that is to say; used to introduce a new idea or explain a previous one
Osetia {prop} [geography]  :: Ossetia
osezno {m}  :: bear cub
osicón {f}  :: informer, tattler
osicona {f}  :: feminine noun of osicón
osiriaco {adj}  :: Osirian
Osiris {prop} [Egyptian mythology]  :: Osiris
osito {f}  :: (a lovable man) teddy bear
osito {f}  :: diminutive form of oso, little bear
osito de peluche {m}  :: teddy bear
osmio {m}  :: osmium
osmótico {adj}  :: osmotic
oso {f}  :: bear
oso {f} [slang]  :: bear (large hairy man, especially homosexual)
-oso {suffix}  :: -ous, -ful, -y
oso blanco {m}  :: polar bear
oso de agua {m}  :: A tardigrade, water bear
oso de anteojos {m}  :: spectacled bear
oso hormiguero {m}  :: anteater
oso hormiguero {m}  :: An uncircumcised penis, a cheeser
oso Kodiak {m}  :: Kodiak bear
oso lavador {m}  :: raccoon
oso malayo {m}  :: sun bear
oso negro {m}  :: black bear
oso panda {m}  :: panda; panda bear
oso pardo {m}  :: brown bear (Ursus arctos)
oso polar {m}  :: polar bear
oso tibetano {m}  :: Asian black bear; moon bear
osso {m}  :: obsolete spelling of oso
ossobuco {m}  :: osso buco
ostensible {adj}  :: ostensible, apparent
ostensiblemente {adv}  :: ostensibly
ostentación {f}  :: conceit
ostentación {f}  :: ostentation, boastfulness
ostentar {v}  :: to display or flaunt
ostentoso {adj}  :: flashy; showy
osteocondritis {f}  :: osteochondritis
osteocondrosis {f} [pathology]  :: osteochondrosis
osteofito {m}  :: osteophyte
osteología {f}  :: osteology
osteomielitis {f}  :: osteomyelitis
osteoporosis {f}  :: osteoporosis
osteosíntesis {f} [surgery]  :: osteosynthesis
ostia {f}  :: common misspelling of hostia
ostión {m} [Mexico]  :: oyster (particularily from genus Crassostrea), specially when prepared or served for food
ostionera {f} [Mexico]  :: an oyster bar; a place where oysters can be bought (and eaten)
ostionería {f} [Mexico]  :: alternative form of ostionera (oyster bar)
ostomía {f} [surgery]  :: ostomy
ostra {f}  :: oyster
ostracismo {m}  :: ostracism (exclusion from a community)
ostras {interj} [euphemism]  :: shoot, shank, sugar (euphemised form of "shit")
ostrácodo {m}  :: ostracod
ostrería {f} [Mexico]  :: alternative form of ostionera (oyster bar)
ostrogodo {adj}  :: Ostrogothic
ostrogodo {f}  :: Ostrogoth
Osvaldo {prop}  :: alternative form of Oswaldo
Oswaldo {prop}  :: male given name, equivalent to the English Oswald
-ota {suffix}  :: feminine form of -ote
OTAN {acronym}  :: NATO
otavaleño {adj}  :: From or located at Otavalo
otavaleño {f}  :: An inhabitant of Otavalo
Otavalo {prop}  :: Otavalo
-ote {suffix}  :: emphasizes contempt for subject
-ote {suffix}  :: emphasizes size
otear {v}  :: to size up
otear {v}  :: to survey
Otelo {prop}  :: Othello (Shakespeare character)
otero {m}  :: knoll
otitis {f}  :: otitis
otoñal {adj}  :: autumnal
otolito {m} [zoology]  :: otolith
otomí {adj}  :: Of or pertaining to the Otomi people and their language
otomí {m}  :: A member of the Otomi people
otomí {m}  :: the Otomi language
otomano {adj}  :: Ottoman (relating to the empire centred in Turkey from the 14th century to the 20th)
otomano {m}  :: Ottoman (Turk from the Ottoman Empire)
otoño {m}  :: autumn, fall
otoplastia {f} [surgery]  :: otoplasty
otorgamiento {m}  :: Act of granting or awarding
otorgar {v}  :: to award
otorgar {v}  :: to grant
otorrino {m}  :: ENT specialist
otorrinolaringóloga {f}  :: feminine noun of otorrinolaringólogo
otorrinolaringólogo {f}  :: otorhinolaryngologist
otorrinolaringología {f}  :: otorhinolaryngology
ototóxico {adj}  :: ototoxic (toxic to the ear)
otra {pron}  :: feminine singular form of otro
otras {adj}  :: feminine plural of otro; other
otra vez {adv} [idiomatic]  :: again
otredad {f} [philosophy]  :: otherness
otro {adj}  :: other, another
otro {interj}  :: "Not again!" or "What, again?" (also Otra vez! or Otra vez?)
otrora {adj}  :: former, then
otrora {adv}  :: formerly, in days of yore, in days gone by
Ouro Preto {prop}  :: Ouro Preto (placename)
outlet {m}  :: An outlet store
ovación {f}  :: ovation
ovacionar {v}  :: to hail (praise enthusiastically)
oval {adj}  :: oval (shaped like an oval)
ovalado {adj}  :: oval (oval-shaped)
ovario {m} [anatomy, botany]  :: ovary
oveja {f}  :: sheep
oveja negra {f} [idiomatic]  :: black sheep
ovejera {f}  :: feminine noun of ovejero
ovejero {f}  :: shepherd
ovejita {f}  :: diminutive form of oveja, a small lamb (especially female)
ovejita {f} [slang, Latin America]  :: , a promiscuous woman; a hooker
ovejo {m} [Latin America]  :: ram (male sheep)
overo {adj} [Chile, Argentina, Uruguay]  :: piebald; mottled
overol {m}  :: overalls plural (not US), coveralls plural (US only)
ovetense {adj}  :: Oviedan
ovetense {m}  :: Oviedan
Ovidio {prop}  :: Ovid
oviedista {m} [soccer]  :: A person connected with Real Oviedo, a Spanish football team from the city of Oviedo
Oviedo {prop}  :: Oviedo (placename)
Oviedo {prop}  :: The letter O in the Spanish phonetic alphabet
ovillar {v}  :: to roll into a ball
ovino {adj}  :: ovine
OVNI {m}  :: objeto volador no identificado; UFO
ovoalbúmina {f} [protein]  :: ovalbumin
ovocitario {adj} [cytology]  :: ovum (attributive)
ovoide {adj}  :: ovoid (egg-shaped)
ovoide {m}  :: ovoid
ovíparo {adj}  :: oviparous
ovulación {f}  :: ovulation
ovular {v}  :: to ovulate
oxalato {m} [organic compound]  :: oxalate
oxaloacetato {m} [organic compound]  :: oxaloacetate
oxaloacético {adj}  :: oxaloacetic
oxalocrotonato {m} [chemistry]  :: oxalocrotonate
oxazol {m} [organic compound]  :: oxazole
oxácido {m}  :: oxyacid
oxígeno {m}  :: oxygen
oxhídrico {adj} [chemistry]  :: oxyhydrogen
oxhidrilo {m} [chemistry]  :: hydroxyl
oxi- {prefix} [chemistry]  :: oxy-
oxiácido {m} [inorganic chemistry]  :: alternate form of oxácido ("oxyacid")
oxidable {adj}  :: oxidizable
oxidación {f}  :: oxidation
oxidante {adj} [chemistry]  :: oxidizing
oxidante {m} [chemistry]  :: oxidizing agent, oxidant
oxidar {v}  :: to oxidize
oxidasa {f} [enzyme]  :: oxidase
oxidativo {adj}  :: oxidative
oxidorreductasa {f} [enzyme]  :: oxidoreductase
oxigenación {f}  :: oxygenation
oxigenar {v}  :: to oxygenate
oxigenasa {f} [enzyme]  :: oxygenase
oxihemoglobina {f}  :: oxyhemoglobin
oxilipina {f} [organic compound]  :: oxylipin
oximercuración {f} [organic chemistry]  :: oxymercuration
oximetría {f}  :: oximetry
oxitocina {f} [hormone]  :: oxytocin
oxálico {adj}  :: oxalic
oxímoron {m}  :: oxymoron (figure of speech)
oxoanión {m} [chemistry]  :: oxoanion
oxocarbenio {m} [organic chemistry]  :: oxocarbenium
oxonio {m} [chemistry]  :: oxonium
oyamel {m}  :: sacred fir (Abies religiosa)
oye {interj}  :: (exclamation) hey
oyente {m}  :: listener (to the radio)
oyente {m}  :: Unregistered student, student who sits in lectures despite not being an official student
ozonización {f}  :: ozonization
ozonólisis {f} [chemistry]  :: ozonolysis
ozono {m}  :: ozone
ópalo {m}  :: opal
ópera {f} [music]  :: opera
ópticas {adj}  :: feminine plural of óptico
óptico {adj}  :: optical; optic
óptimo {adj}  :: optimal
óptimo {adj}  :: superlative form of bueno, very good
órale {interj} [Mexico]  :: let's go, come on, hurry (used to exhort)
órale {interj} [Mexico]  :: oh my God, wow (indicates amazement, astonishment, excitement, surprise, shock, fear)
órale {interj} [Mexico]  :: yes, ok (indicates approbation)
órbita {f}  :: orbit
órdago {m}  :: a large bet; an all-or-nothing bet
órden {m}  :: obsolete spelling of orden
órgano {m}  :: means;medium
órgano {m}  :: organ (all senses)
órice {m}  :: oryx
órsay {m} [soccer]  :: offside
Óscar {prop}  :: male given name
ósculo {m} [formal]  :: kiss
óseo {adj}  :: osseous, bony
ósmosis {f}  :: osmosis
ósmosis {f} [slang]  :: osmosis
óvalo {m}  :: oval
óvulo {m} [botany]  :: ovule
óvulo {m} [zoology]  :: ovule (immature ovum)
óxido {m}  :: oxide
óxido {m}  :: rust
óxido de calcio {m}  :: calcium oxide