ETYM Late Lat. epocha, Greek epoche check, stop, an epoch of a star, an historical epoch, from epechein to hold on, check.
(Homonym: epic).
1. A unit of geological time.
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.
Subdivision of a geological period in the geological time scale. Epochs are sometimes given their own names (such as the Paleocene, Eocene, Oligocene, Miocene, and Pliocene epochs comprising the Tertiary period), or they are referred to as the late, early, or middle portions of a given period (as the Late Cretaceous or the Middle Triassic epoch).
Period, razdoblje, trenutak zbivanja.
Doba, vreme nekoga znatnog događaja od koga se počinje brojati izvestan niz godina, otsek ili period vremena; činiti epohu, stvarati jedno novo i značajno doba, učiniti sebe ili doba u kojem se živi značajnim, izazvati velik ugled, biti značajan; astr. proizvoljno utvrđen datum za koji su uneti u tablice elementi nužni za izračunavanje mesta nekog nebeskog tela. (grč.)