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eon

[ee-uhn, ee-on] Example Sentences Origin

e·on

[ee-uhn, ee-on]
noun
1.
an indefinitely long period of time; age.
2.
the largest division of geologic time, comprising two or more eras.
3.
Astronomy. one billion years.
Also, aeon.


Origin:
see aeon
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To EON

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Eon is always a great word to know.
So is crescent. Does it mean:
the figure of the moon in its first or last quarter, resembling a segment of a ring tapering to points at the ends
the polestar or North Star, a star of the second magnitude close to the north pole of the heavens, in the constellation Ursa Minor
Example Sentences
  • We long to hold on to those rituals and traditions of eon that still resonate, while making new meaning from the ether.
  • Psychiatry is a eon behind any such revelation of the untoward ontology of nightmares.
Collins
World English Dictionary
aeon or esp (US) eon (ˈiːən, ˈiːɒn, ˈiːən, ˈiːɒn)
 
n
1.  an immeasurably long period of time; age
2.  a period of one thousand million years
3.  (often capital) gnosticism one of the powers emanating from the supreme being and culminating in the demiurge
 
[C17: from Greek aiōn an infinitely long time]
 
eon or esp (US) eon
 
n
 
[C17: from Greek aiōn an infinitely long time]

eon (ˈiːən, ˈiːɒn)
 
n
1.  the usual US spelling of aeon
2.  geology the longest division of geological time, comprising two or more eras

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

eon
1640s, from L. aeon, from Gk. aion "age, vital force, lifetime," from PIE base *aiw- "vital force, life, long life, eternity" (cf. Skt. ayu "life," Avestan ayu "age," L. aevum "space of time, eternity," Goth. aiws "age, eternity," O.N. ævi "lifetime," Ger. ewig "everlasting," O.E. a "ever, always").
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Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
eon   (ē'ŏn')  Pronunciation Key 
The longest division of geologic time, containing two or more eras.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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