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English noun: epoch

1. epoch (time) a period marked by distinctive character or reckoned from a fixed point or event


Broader (hypernym)period, period of time, time period

Narrower (hyponym)age, day, historic period, modern era

Instance hyponymCaliphate, Christian era, Common era

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

Synonymsdate of reference

Broader (hypernym)date

Domain categoryastronomy, uranology

3. epoch (time) a unit of geological time that is a subdivision of a period and is itself divided into ages

Broader (hypernym)geologic time, geological time

Instance hyponymEocene, Eocene epoch, Glacial epoch, Holocene, Holocene epoch, Miocene, Miocene epoch, Oligocene, Oligocene epoch, Paleocene, Paleocene epoch, Pleistocene, Pleistocene epoch, Pliocene, Pliocene epoch, Recent, Recent epoch

Part meronymgeological period, period

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