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Từ điển Oxford Learners Wordfinder Dictionary
epoch
1. a period marked by distinctive character or reckoned from a fixed point or event (Freq. 5) • Syn: era • Derivationally related forms: epochal • Hypernyms: time period, period of time, period • Hyponyms: day, historic period, age, modern era • Instance Hyponyms: Caliphate, Christian era, Common era 2. (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded • Syn: date of reference • Topics: astronomy, uranology • Hypernyms: date 3. a unit of geological time that is a subdivision of a period and is itself divided into ages • Hypernyms: geological time, geologic time • Instance Hyponyms: Holocene, Holocene epoch, Recent, Recent epoch, Pleistocene, Pleistocene epoch, Glacial epoch, Pliocene, Pliocene epoch, Miocene, Miocene epoch, Oligocene, Oligocene epoch, Eocene, Eocene epoch, Paleocene, Paleocene epoch • Part Holonyms: period, geological period
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