1. Greek Mythology. A Trojan boy of great beauty whom Zeus carried away to be his lover and to be cupbearer to the gods.
2. One of the four brightest satellites of Jupiter and the seventh in distance from the planet. Originally sighted by Galileo, it is one of the largest satellites in the solar system.

[Latin Ganymēdēs, from Greek Ganumēdēs.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.