adjective
- of or like ice or glaciers
- of or produced by a glacier or a glacial epoch or period
- freezing; frigid: glacial weather
- cold and unfriendly: a glacial stare
- as slow as the movement of a glacier: glacial progress
- Chem. having an icelike, crystalline appearance
Origin:
L glacialis, icy, frozen < glacies, ice < IE *glag-, partial redupl. of base *gel-, to freeze > cold