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epoch

(n): a period marked by distinctive character or reckoned from a fixed point or event

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(n): an amount of time

(n): (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded

(n): the particular day, month, or year (usually according to the Gregorian calendar) that an event occurred

(n): a unit of geological time that is a subdivision of a period and is itself divided into ages

(n): the time of the physical formation and development of the earth (especially prior to human history)

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lurk (254 words)

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