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Meaning of PLANETOID

Pronunciation:  'plani`toyd

WordNet Dictionary
 
 Definition: [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)
 
 Synonyms: asteroid, minor planet
 
 See Also: Apollo asteroid, Ceres, Pallas, planet, solar system, Vesta

 

 

Webster's 1913 Dictionary
 
 Definition: 
\Plan"et*oid\, n. [Planet + -oid.] (Astron.)
A body resembling a planet; an asteroid.
 

 

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