'Planetoid' definitions:
Definition of 'planetoid'
(from WordNet)
noun
Any of numerous small celestial bodies that move around the sun [syn: minor planet, planetoid]
Definition of 'Planetoid'
From: GCIDE
- Planetoid \Plan"et*oid\, n. [Planet + -oid.] (Astron.) A body resembling a planet; an asteroid. [1913 Webster]