Pronunciation: (if"ē-u-nas'u), [key]
1. (in the Iliad) a daughter of Agamemnon, offered to Achilles as a wife if he would return to battle against the Trojans.
2. a daughter of Proetus and Antia who, with her sisters Iphinoë and Lysippe, was inflicted with madness for her irreverence toward the gods.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.