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    hadean eon

    hadean eon - Dictionary definition and meaning for word hadean eon

    Definition
    (noun) the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); no evidence of life

Word used in video below:
text: Mary do it's such Eon since we've had
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