An example of an eon is the unit of measure used when talking about how long ago the solar system was created.
An example of an eon is the amount of time since dinosaurs roamed the earth.
It's been eons since we last saw each other.
Origin of eon
- Late Latin aeōn from Greek aiōn aiw- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Ancient Greek αἰών (aiōn, “age”).