Glacial epoch

Thesaurus

Noun	1.	glacial epoch - any period of time during which glaciers covered a large part of the earth's surface; "the most recent ice age was during the Pleistocene" glacial period, ice age geological period, period - a unit of geological time during which a system of rocks formed; "ganoid fishes swarmed during the earlier geological periods" prehistoric culture, prehistory - the time during the development of human culture before the appearance of the written word
	2.	Glacial epoch - from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution Pleistocene, Pleistocene epoch Age of Man, Quaternary, Quaternary period - last 2 million years