a mass of ice and dust that moves around the sun and looks like a bright star with a tail Wordfinderuniverseasteroid, astronomy, comet, constellation, cosmic, galaxy, meteorite, orbit, space, the universe See related entries: The universe Word Originlate Old English, from Latin cometa, from Greek komētēs ‘long-haired (star)’, from komē ‘hair’; reinforced by Old French comete.
Check pronunciation: comet
