Hypertext Webster Gateway: "planetoid"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Planetoid \Plan"et*oid\, n. [Planet + -oid.] (Astron.)
A body resembling a planet; an asteroid.
From WordNet (r) 1.7 (wn)
planetoid
n : any of numerous small celestial bodies composed of rock and
metal that move around the sun (mainly between the orbits
of Mars and Jupiter) [syn: {asteroid}, {minor planet}]
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