asteroid (n.)
"one of the planetoids orbiting the sun, found mostly between Mars and Jupiter," 1802, coined probably by German-born English astronomer William Herschel (1738-1822) from Greek asteroeides "star-like," from aster "star" (from PIE root *ster- (2) "star") + -eidos "form, shape" (see -oid). Related: Asteroidal.
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