Glacial1. (a.) Pertaining to ice or to its action; slow moving; as a glacial pace; frozen; icy; esp., pertaining to glaciers; as, glacial phenomena.
2. (a.) Resembling ice; having the appearance and consistency of ice; -- said of certain solid compounds; as, glacial phosphoric or acetic acids.
Thesaurus Entries
Siberian, algid, aloof, arctic, below zero, biting, bitter, bitterly cold, blast-frozen, bleak, boreal, brisk, brumal, chill, chilly, cold, cold as charity, cold as death, cold as ice, cold as marble, congealed, cool, crisp, cutting, distant, emotionless, exclusive, freezing, freezing cold, frigid, frostbitten, frostnipped, frosty, frozen, frozen solid, gelid, hibernal, hiemal, hyperborean, ice, ice-cold, ice-encrusted, icelike, icy, icy-cold, inaccessible, inclement, indifferent, keen, nipping, nippy, numbing, penetrating, piercing, pinching, quick-frozen, raw, remote, reserved, rigorous, seclusive, severe, sharp, sharp-frozen, sleety, slushy, snappy, standoffish, stone-cold, subzero, supercooled, unapproachable, unemotional, winterbound, winterlike, wintery, wintry, withdrawn