Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

aeon

noun ae·on \ˈē-ən, ˈē-ˌän\

Definition of aeon

  1. 1 :  an immeasurably or indefinitely long period of time :  age

  2. 2 a usually eon :  a very large division of geologic time usually longer than an era b :  a unit of geologic time equal to one billion years



Examples of aeon in a sentence

  1. <it's been aeons since I saw a movie at the multiplex>

  2. <glaciers that formed aeons ago>



Variants of aeon

or

eon

play \ˈē-ən, ˈē-ˌän\

Origin and Etymology of aeon

Latin, from Greek aiōn — more at aye


First Known Use: circa 1642

Other Weights and Measures Terms

Rhymes with aeon


AEON Defined for Kids

aeon

play
noun ae·on \ˈē-ən, ˈē-ˌän\

Definition of aeon for Students

  1. :  a very long period of time <I haven't been to the movies in aeons.>



Variants of aeon

or

eon

\ˈē-ən, ˈē-ˌän\


Seen and Heard

What made you want to look up aeon? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

prophetic or oracular

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

confounded-person

Which is a synonym of indolent?

frenetic lazy philistine melancholy
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ