Pronunciation: (u-pol'ō), [key]
—pl. -los for 2, 3.
1. the ancient Greek and Roman god of light, healing, music, poetry, prophecy, and manly beauty; the son of Leto and brother of Artemis.
2. a very handsome young man.
3. Aerospace.one of a series of U.S. spacecraft designed to carry astronauts to the moon and back.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.