eon
eon
Definition
eon (ē′ən, ē′än′)
noun
- an extremely long, indefinite period of time; thousands and thousands of years
- Geol.
- the major unit of geologic time, usually subdivided into eras
- a billion years
Etymology: LL < Gr aiōn, an age, lifetime, eternity < IE base *aiw-, vitality: see aye
eon
Synonyms
eon
Usage Examples
Preposition: of
- time: There has been fighting in the Middle East for eons of time.
- history: The rocks of both sharing in common the eons of history that have passed since their birthing.
Converse of object
- take: Fossils, coal deposits, petroleum deposits, all of them took immense eons to form.
- seem: It seemed eons since she and Alex had sat for hours at dinner and chatted about the things that were important to them.
- wait: It was captured by Saturn's gravitational field and has been waiting eons for Cassini to come along.
- start: What happened to the dandelions, violets, thistle and stuff I started eons ago?
Adjective modifier
- Proterozoic: Symbiosis in Cell Evolution: Microbial Communities in the Archean and Proterozoic Eons, second edition.
- Hadean: Earth condenses from the hot gases of the Solar Nebula... January to early March: Hadean eon.
