eon

e·on also ae·on  (n, n)

n.

1. An indefinitely long period of time; an age.

2. The longest division of geologic time, containing two or more eras.

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[Late Latin aen, from Greek ain; see aiw- in Indo-European roots.]

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eon [ˈiːən ˈiːɒn]

n

1. the usual US spelling of aeon

2. (Miscellaneous Technologies / Horology) Geology the longest division of geological time, comprising two or more eras

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eon  (n)

The longest division of geologic time, containing two or more eras.

Thesaurus

Noun	1.	eon - the longest division of geological time aeon geologic time, geological time - the time of the physical formation and development of the earth (especially prior to human history) geological era, era - a major division of geological time; an era is usually divided into two or more periods
	2.	eon - an immeasurably long period of time; "oh, that happened eons ago" aeon long time, years, age - a prolonged period of time; "we've known each other for ages"; "I haven't been there for years and years"
	3.	eon - (Gnosticism) a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe aeon Gnosticism - a religious orientation advocating gnosis as the way to release a person's spiritual element; considered heresy by Christian churches spiritual being, supernatural being - an incorporeal being believed to have powers to affect the course of human events