Eon meaning

ēŏn, ēən
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The longest division of geologic time, containing two or more eras.
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The longest division of geologic time , containing two or more eras.
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Eon, a variation of aeon, is defined as a unit of geological time equal to a billion years, or a very long period of time.

An example of an eon is the unit of measure used when talking about how long ago the solar system was created.

An example of an eon is the amount of time since dinosaurs roamed the earth.

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An indefinitely long period of time; an age.
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An extremely long, indefinite period of time; thousands and thousands of years.
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(geology) The longest time period used in geology.
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A period of 1,000,000,000 years.
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(Gnosticism, usually spelled aeon or æon) A spirit being emanating from the Godhead.
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(politics) ΕΟΝ, the Greek National Organisation of Youth similar to the Hitler Youth, it was formed before WWII and disbanded in 1941.
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(US) Eternity.
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(US, informal, hyperbolic) A long period of time.

It's been eons since we last saw each other.

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Origin of eon

  • Late Latin aeōn from Greek aiōn aiw- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek αἰών (aiōn, “age”).

    From Wiktionary