Dictionary
Hy•pe•ri•on
Pronunciation: (hī-pēr'ē-un), [key]—
n.
1. Class. Myth.a Titan, the father of Helios, Selene, and Eos.
2. Astron.a natural satellite of the planet Saturn.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.