Noun: eon ee-un or 'ee,ón
- An immeasurably long period of time
"oh, that happened eons ago";
- aeon
- The longest division of geological time
"Dinosaurs roamed the Earth for more than one eon";
- aeon
- (Gnosticism) a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe
"The Gnostic text described the eons as emanations from the divine";
- aeon
Derived forms: eons
Type of: age, donkey's years [Brit, informal], geologic time, geological time, lifetime, long time, spiritual being, supernatural being, years, yonks [Brit, informal]
Encyclopedia: Eon