any of the small celestial bodies that are thought to orbit the sun, possibly as the remains of comets. When they enter the earth's atmosphere, they become visible as meteors
Derived forms
meteoroidal (ˌmeteorˈoidal)
adjective
meteoroid in American English
(ˈmitiərˌɔɪd)
noun
any of the many small, solid bodies traveling through outer space, which are seen as meteors when they enter the earth's atmosphere