首页英语词典epochepoch英英释意

epoch

英 ['iːpɒk; 'epɒk] 美['ɛpək]
  • n. [地质] 世;新纪元;新时代;时间上的一点

英英释意


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