- an indefinitely long period of time; age.
- the largest division of geologic time, comprising two or more eras.
- Astronomy. one billion years.
Origin of eon
Examples from the Web for eons
These molecules have been at it for eons—they were engineered in the oldest workshop on earth: evolution.The Big Idea: Werner Loewenstein’s ‘Physics in Mind’
February 8, 2013
The real award, however, went to Girls, the first Best Comedy award not given to Modern Family seemingly in eons.Golden Globes 2013: Amy Poehler, Tina Fey & More Best Moments (VIDEO)
January 14, 2013
In the eons since those corals were formed, two hours have been added to every day.How Long Is a Year? Is the Earth Slowing Down? And Other Questions About Time
January 6, 2013
Women have been slaving away in the kitchen for eons, maybe a little bit longer.Sex and the Kitchen
June 25, 2009
As China was for centuries, so for eons we of this earth have been isolated.The Fire People
At last, after eons, they reached the corner of her own yard.
Presently, after eons it seemed, she desperately evoked a small, jerky voice.
The six days of Creation were six eons or geological periods.Little Journeys to the Homes of the Great - Volume 12
After eons and eons of time the band played "Home, Sweet Home."Sandy
Alice Hegan Rice
- the usual US spelling of aeon
- geology the longest division of geological time, comprising two or more eras
Word Origin and History for eons
1640s, from Latin aeon, from Greek aion "age, vital force, a period of existence, lifetime, generation;" in plural, "eternity," from PIE root *aiw- "vital force, life, long life, eternity" (cf. Sanskrit ayu "life," Avestan ayu "age," Latin aevum "space of time, eternity," Gothic aiws "age, eternity," Old Norse ævi "lifetime," German ewig "everlasting," Old English a "ever, always").
- The longest division of geologic time, containing two or more eras.