Dictionary
me•te•or•oid
Pronunciation: (mē'tē-u-roid"), [key]—
n. Astron.
any of the small bodies, often remnants of comets, traveling through space: when such a body enters the earth's atmosphere it is heated to luminosity and becomes a meteor.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.