aeon

[ ee-uh n, ee-on ]
/ ˈi ən, ˈi ɒn /

noun

(in Gnosticism) one of a class of powers or beings conceived as emanating from the Supreme Being and performing various functions in the operations of the universe.

Origin of aeon

1640–50; < Late Latin < Greek aiṓn space of time, age

Definition for aeon (2 of 2)

eon

or ae·on

[ ee-uh n, ee-on ]
/ ˈi ən, ˈi ɒn /

noun

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

see origin at aeon
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for aeon

British Dictionary definitions for aeon (1 of 2)

aeon

esp US eon

/ (ˈiːən, ˈiːɒn) /

noun

an immeasurably long period of time; age
a period of one thousand million years
(often capital) gnosticism one of the powers emanating from the supreme being and culminating in the demiurge

Word Origin for aeon

C17: from Greek aiōn an infinitely long time

British Dictionary definitions for aeon (2 of 2)

eon

/ (ˈiːən, ˈiːɒn) /

noun

the usual US spelling of aeon
geology the longest division of geological time, comprising two or more eras
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for aeon

eon

[ ēŏn′ ]

The longest division of geologic time, containing two or more eras.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.