a. Of, relating to, or produced by a glacier.
b. Extremely slow, like the movement of a glacier: Work proceeded at a glacial pace.
a. often Glacial Characterized or dominated by the existence of glaciers. Used of a geologic epoch.
b. Pleistocene. See Table at geologic time.
3. Extremely cold; icy: a glacial rain. See Synonyms at cold.
4. Having the appearance of ice.
a. Lacking warmth and friendliness: a glacial stare.
b. Coldly detached: a glacial composure.
[French, from Old French, icy, from Latin glaciālis, from glaciēs, ice; see gel- in the Appendix of Indo-European roots.]
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