asteroid

Definition from Wiktionary, the free dictionary
Jump to navigation Jump to search
See also: Asteroid

English[edit]

English Wikipedia has articles on:
Wikipedia

Pronunciation[edit]

  • enPR: ăs'tə-roid", IPA(key): /ˈæstəɹoɪd/
  • Audio (US)
    		(file)

Etymology 1[edit]

Borrowed from Ancient Greek ἀστεροειδής (asteroeidḗs), from ἀστήρ (astḗr, “star”) + εἶδος (eîdos, “form”).

Noun[edit]

asteroid (plural asteroids)

  1. (zoology) Any member of the taxonomic class Asteroidea; a starfish

Related terms[edit]

Etymology 2[edit]

English Wikipedia has an article on:
Wikipedia
An asteroid.

aster +‎ -oid Coined by William Herschel, terming these objects "star-like"

Noun[edit]

asteroid (plural asteroids)

  1. (astronomy) A naturally occurring solid object, which is smaller than a planet and is not a comet, that orbits a star
  2. (astronomy) In the Solar system, such a body that orbits within the orbit of Jupiter
    • 2007, Hannu Karttunen et al., editor, Fundamental Astronomy, 5 edition, page 131:
      The orbital planes of asteroids, minor bodies that circle the Sun mainly between the orbits of Mars and Jupiter, are often more tilted ...
Usage notes[edit]

The term "asteroid" has never been precisely defined. It was coined for objects which looked like stars in a telescope but moved like planets. These were known from the asteroid belt between Mars and Jupiter, and were later found co-orbiting with Jupiter (Trojan asteroids) and within the orbit of Mars. They were naturally distinguished from comets, which did not look at all starlike. Starting in the 1970s, small non-cometary bodies were found outside the orbit of Jupiter, and usage became divided as to whether to call these "asteroids" as well. Some astronomers restrict the term "asteroid" to rocky or rocky-icy bodies with orbits up to Jupiter. They may retain the term planetoid for all small bodies, and thus tend to use it for icy or rocky-icy bodies beyond Jupiter, or may use dedicated words such as centaurs, Kuiper belt objects, transneptunian objects, etc. for the latter. Other astronomers use "asteroid" for all non-cometary bodies smaller than a planet, even large ones such as Sedna and (occasionally) Pluto. However, the distinction between asteroid and comet is an artificial one; many outer "asteroids" would become comets if they ventured nearer the Sun. The IAU terminology since 2006 has been small Solar System body for any body that orbits the Sun directly and whose shape is not dominated by gravity.

Derived terms[edit]
Related terms[edit]
Translations[edit]

See also[edit]

Further reading[edit]

Anagrams[edit]

Czech[edit]

Noun[edit]

asteroid m

  1. asteroid

Declension[edit]

Declension
singular plural
nominative asteroid asteroidy
genitive asteroidu asteroidů
dative asteroidu asteroidům
accusative asteroid asteroidy
vocative asteroide asteroidy
locative asteroidu asteroidech
instrumental asteroidem asteroidy

See also[edit]

Related terms[edit]

Further reading[edit]

Estonian[edit]

Etymology[edit]

EB1911 - Volume 01 - Page 001 - 1.svg This entry lacks etymological information. If you are familiar with the origin of this term, please add it to the page per etymology instructions, or discuss it at the Etymology scriptorium.

Noun[edit]

asteroid (genitive [please provide], partitive [please provide])

  1. asteroid

Inflection[edit]

This noun needs an inflection-table template.

Indonesian[edit]

Noun[edit]

asteroid (plural asteroid-asteroid, first-person possessive asteroidku, second-person possessive asteroidmu, third-person possessive asteroidnya)

  1. asteroid

Romanian[edit]

Etymology[edit]

Borrowed from French astéroïde.

Noun[edit]

asteroid m (plural asteroizi)

  1. asteroid

Declension[edit]

declension of asteroid
singular plural
indefinite articulation definite articulation indefinite articulation definite articulation
nominative/accusative (un) asteroid asteroidul (niște) asteroizi asteroizii
genitive/dative (unui) asteroid asteroidului (unor) asteroizi asteroizilor
vocative asteroidule asteroizilor

Serbo-Croatian[edit]

Noun[edit]

asteròīd m (Cyrillic spelling астеро̀ӣд)

  1. asteroid

Declension[edit]

Declension of asteroid
singular plural
nominative asteròīd asteroidi
genitive asteroída asteroida
dative asteroidu asteroidima
accusative asteroid asteroide
vocative asteroide asteroidi
locative asteroidu asteroidima
instrumental asteroidom asteroidima

Slovene[edit]

Pronunciation[edit]

Noun[edit]

asteroíd m inan (genitive asteroída, nominative plural asteroídi)

  1. asteroid

Declension[edit]

Declension of asteroíd (masculine inan., hard o-stem)
singular dual plural
nominative asteroíd asteroída asteroídi
accusative asteroíd asteroída asteroíde
genitive asteroída asteroídov asteroídov
dative asteroídu asteroídoma asteroídom
locative asteroídu asteroídih asteroídih
instrumental asteroídom asteroídoma asteroídi

Swedish[edit]

Pronunciation[edit]

Noun[edit]

asteroid c

  1. asteroid

Declension[edit]

Declension of asteroid 
Singular Plural
Indefinite Definite Indefinite Definite
Nominative asteroid asteroiden asteroider asteroiderna
Genitive asteroids asteroidens asteroiders asteroidernas
Retrieved from "https://en.wiktionary.org/w/index.php?title=asteroid&oldid=52557267"