| 释义 | 
		eo·cene I. \ˈēəˌsēn\ adjective Usage: usually capitalized Etymology: eo- + -cene  : of or relating to the second principal subdivision of the Tertiary — used commonly of the epoch following the Paleocene and preceding the Oligocene but sometimes of all the Cenozoic era preceding the Miocene; see geologic time table II. noun (-s) Usage: usually capitalized 1.  : the Eocene epoch 2.  : the series deposited during the Eocene epoch |