Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun geological_period

1 sense of geological period

Sense 1
period, geological period -- (a unit of geological time during which a system of rocks formed; "ganoid fishes swarmed during the earlier geological periods")
       => geological time, geologic time -- (the time of the physical formation and development of the earth (especially prior to human history))

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