aeon

noun

ae·on

chiefly British spelling of eon

1 : an immeasurably or indefinitely long period of time : age I haven't seen him in eons.

2a : a very large division of geologic time usually longer than an era the Archean eon

b : a unit of geologic time equal to one billion years

Examples of aeon in a Sentence

it's been aeons since I saw a movie at the multiplex glaciers that formed aeons ago

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Last Updated

18 May 2021

Cite this Entry

“Aeon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aeon. Accessed 21 Jun. 2021.

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More Definitions for aeon

aeon

noun

ae·on

variants: or eon \ ˈē-ən , ˈē-ˌän \

Kids Definition of aeon

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

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