eon
Plural
eons
1
(Gnosticism) a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe
2
an endless or lengthy period of time
- It felt like an eon waiting for the train to arrive.
- The old house hadn't been updated in eons.
- It has been eons since I last saw him.
- She hadn't had a vacation in eons and was ready for a break.
- They've been friends for what seems like eons.
3
a vast and longest subdivision of geological time
- The Phanerozoic Eon encompasses the most recent 540 million years and includes the current era, the Cenozoic.
- Eons serve as fundamental units in the geological time scale, helping organize Earth's extensive history.
- The concept of eons aids scientists in studying the evolution of the Earth's atmosphere, oceans, and continents.
- Eons provide a framework for discussing major geological and biological milestones throughout Earth's history.
- Each eon is marked by distinctive characteristics and transitions, offering insights into the dynamic nature of our planet over immense time spans.