A·pol·lo (?-p?l??)n.1. Greek Mythology The god of prophecy, music, medicine, and poetry, sometimes identified with the sun.2. apollo pl. apol·los A young man of great physical beauty.[Latin Apoll?, from Greek Apoll?n.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.apollo (??p?l??) n, pl -losa strikingly handsome youthapollo (??p?l??) n, pl -los (Animals) a handsome Eurasian mountain butterfly, Parnassius apollo, with palish wings and prominent red ocelliApollo (??p?l??) n (Classical Myth & Legend) classical myth the god of light, poetry, music, healing, and prophecy: son of Zeus and LetoApollo (??p?l??) n (Astronautics) any of a series of manned US spacecraft designed to explore the moon and surrounding space. Apollo 11 made the first moon landing in July 1969Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014A?pol?lo (??p?l o?) n., pl. -los. 1. the ancient Greek and Roman god of light, healing, music, and poetry. 2. a handsome young man. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.