asteroid

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as·ter·oid

 (ăs′tə-roid′)
n.
1. Astronomy Any of numerous small solar system bodies that revolve around the sun, with orbits lying chiefly between Mars and Jupiter and characteristic diameters roughly between one and several hundred kilometers. Also called minor planet, planetoid.
2. Zoology See starfish.
adj. also as·ter·oi·dal (ăs′tə-roid′l)
Star-shaped.

[From Greek asteroeidēs, starlike : astēr, star; see ster- in Indo-European roots + -oeidēs, -oid.]

asteroid

(ˈæstəˌrɔɪd)
n
1. (Celestial Objects) Also called: minor planet or planetoid any of numerous small celestial bodies that move around the sun mainly between the orbits of Mars and Jupiter. Their diameters range from 930 kilometres (Ceres) to less than one kilometre
2. (Zoology) Also called: asteroidean any echinoderm of the class Asteroidea; a starfish
adj
3. (Zoology) of, relating to, or belonging to the class Asteroidea
4. shaped like a star
[C19: from Greek asteroeidēs starlike, from astēr a star]

as•ter•oid

(ˈæs təˌrɔɪd)

n.
1. any of the thousands of small, solid bodies that revolve about the sun in orbits largely between Mars and Jupiter.
adj.
2. starlike.
[1795–1805; < Greek asteroeidḗs starry, starlike. See aster, -oid]
as`ter•oi′dal, adj.

as·ter·oid

(ăs′tə-roid′)
Any of numerous small, often irregularly shaped bodies that orbit the sun. Asteroids range from several hundred miles in diameter to the size of a speck of dust. ♦ Most are found in the region between the orbits of Mars and Jupiter known as the asteroid belt. See Note at solar system.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.asteroid - any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
Chiron - an asteroid discovered in 1977; it is unique in having an orbit lying mainly between the orbits of Saturn and Uranus
minor planet, planetoid - any of numerous small celestial bodies that move around the sun
Adj.1.asteroid - shaped like a starasteroid - shaped like a star      
angulate, angular - having angles or an angular shape

asteroid

noun planetoid, minor planet It's only a matter of time before a giant asteroid destroys the Earth.

Asteroids

Ceres, Eros, Hermes, Hesperia, Juno, Pallas, Phaethon
Translations
asteroidi

asteroid

[ˈæstərɔɪd] Nasteroide m

asteroid

[ˈæstərɔɪd] nastéroïde m

asteroid

nAsteroid m

asteroid

[ˈæstərɔɪd] nasteroide m