Word | Definitions | Synonyms |
---|---|---|
epoch | (noun) a period marked by distinctive character or reckoned from a fixed point or event | Synonyms: era |
(noun) a unit of geological time that is a subdivision of a period and is itself divided into ages | - | |
(noun) (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded | Synonyms: date of reference |