Definition of glacial epoch
1 : any of those parts of geologic time from Precambrian onward in both the northern and southern hemispheres during which a much larger portion of the earth was covered by glaciers than at present
2 usually capitalized G & often capitalized E : the Pleistocene epoch
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up glacial epoch? Please tell us where you read or heard it (including the quote, if possible).