Glacial

a.	1.	Pertaining to ice or to its action; consisting of ice; frozen; icy; esp., pertaining to glaciers; as, glacial phenomena.
	2.	(Chem.) Resembling ice; having the appearance and consistency of ice; - said of certain solid compounds; as, glacial phosphoric or acetic acids. Glacial acid (Chem.) an acid of such strength or purity as to crystallize at an ordinary temperature, in an icelike form; as acetic or carbolic acid. Glacial drift (Geol.) earth and rocks which have been transported by moving ice, land ice, or icebergs; bowlder drift. Glacial epoch (Geol.) a period during which the climate of the modern temperate regions was polar, and ice covered large portions of the northern hemisphere to the mountain tops. Glacial theory (Geol.) See Glacier theory, under Glacier.

Adj.	1.	glacial - relating to or derived from a glacier; "glacial deposit"
	2.	glacial - devoid of warmth and cordiality; expressive of unfriendliness or disdain; "a frigid greeting"; "got a frosty reception"; "a frozen look on their faces"; "a glacial handshake"; "icy stare"; "wintry smile" Synonyms: frosty, icy, wintry, frozen, frigid
	3.	glacial - extremely cold; "an arctic climate"; "a frigid day"; "gelid waters of the North Atlantic"; "glacial winds"; "icy hands"; "polar weather" Synonyms: gelid, icy, frigid, arctic, polar

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standoffish, stone-cold, subzero, supercooled, unapproachable, unemotional, winterbound, winterlike, wintery, wintry, withdrawn

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