Glacial

gla's hal. a. Pert, to ice or action icy esp. pertaining to glaciers. (Chem.) Having a gla y appearance, as crystals. [F. L. glacial is, glades, ice, gelu, cold. See Gelatine.] — Glacial acid. (Chem.) An acid so strong as to crystallize at an ordinary temperature. — Gla'cia'tion, -sM-a''- shun, n. Act of freezing; that formed by freezing; ice proce of becoming covered with glaciers. — Glacier, gla's er or glas'I-er, n. A ma of ice, or snow and ice, formed in the region of perpetual snow, and moving slowly down mountain slopes or valleys. [F. f glace, ice.] — Glacis, gla's is or glasesr n. An easy, insensible slope esp. (Fort.), an earthen parapet to the covered way. [F., orig. a slippery place, glacer, to freeze, cover with ice.]