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.
2
a
: 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

Dictionary Entries Near aeon

Cite this Entry

“Aeon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aeon. Accessed 23 Feb. 2024.

Kids Definition

aeon

chiefly British variant of eon

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