AskDefine | Define epoch

Dictionary Definition



1 a period marked by distinctive character or reckoned from a fixed point or event [syn: era]
2 (astronomy) the precise date that is the point of reference for which information (as coordinates of a celestial body) is referred [syn: date of reference]
3 a unit of geological time

User Contributed Dictionary



From Latin epocha < ἐποχή epokhe



  1. A particular period of history, especially one considered remarkable or noteworthy.
  2. A notable event which marks the beginning of such a period.
  3. A precise instant of time that is used as a reference point.
  4. In the context of "computing|uncountable": January 1, 1970, 00:00:00 GMT


  • a particular period in history: era; age (epoch is a subcategory of era and/or age)


  • Bosnian: epoha
  • Bulgarian: епоха (epoha)
  • Croatian: epoha
  • French: époque
  • Finnish: aikakausi, epookki
  • German: Epoche
  • Greek: εποχή
  • Italian: epoca (1)

See also

Extensive Definition

Depending on context, epoch can refer to:

Period of time

Moment in time

  • epoch (reference date) - a significant event, time, or moment which is chosen as a new origin for time measurements, usually as the delimiting factor of an era.
  • epoch (astronomy) - a precise moment in time for which celestial coordinates or orbital elements are specified

Proper noun


epoch in Catalan: Època
epoch in German: Epoche
epoch in French: Époque
epoch in Italian: Epoca
epoch in Luxembourgish: Epoch
epoch in Dutch: Epoche
epoch in Japanese: エポック
epoch in Polish: Epoka
epoch in Portuguese: Época
epoch in Russian: Эпоха (значения)
epoch in Serbo-Croatian: Epoha
epoch in Finnish: Epookki

Synonyms, Antonyms and Related Words

Bronze Age, Dark Ages, Depression Era, Golden Age, Ice Age, Iron Age, Jacksonian Age, Middle Ages, New Deal Era, Prohibition Era, Silver Age, Steel Age, Stone Age, age, days, era, glacial epoch, interval, term, time
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