Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun glacial_epoch

2 senses of glacial epoch

Sense 1
ice age, glacial period, 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")
       => period, geological period -- (a unit of geological time during which a system of rocks formed; "ganoid fishes swarmed during the earlier geological periods")

Sense 2
Pleistocene, Pleistocene epoch, Glacial epoch -- (from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution)
       INSTANCE OF=> epoch -- (a unit of geological time that is a subdivision of a period and is itself divided into ages)