planetoid

plan·e·toid  (pln-toid)

n.

See asteroid.

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plane·toidal (-toidl) adj.

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planetoid [plan-it-oid]

Noun

See asteroid

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planetoid  (pln-toid)

See asteroid.

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planetoid

Astronomy. any of thousands of small celestial bodies that revolve about the sun in orbits chiefly between those of Mars and Jupiter ranging in diameter from one mile to 480 miles. Also called asteroids, minor planets. — planetoidal, adj.

See also: Planets

Thesaurus

Noun

1.

planetoid - any of numerous small celestial bodies that move around the sun minor planet 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) celestial body, heavenly body - natural objects visible in the sky KBO, Kuiper belt object - any of many minor planets in the Kuiper belt outside the orbit of Neptune at the edge of the solar system solar system - the sun with the celestial bodies that revolve around it in its gravitational field