[ ee-uhn, ee-on ]
/ ˈi ən, ˈi ɒn /


(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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for aeon

British Dictionary definitions for aeon


esp US eon

/ (ˈiːən, ˈiːɒn) /


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
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