Definitions for: Glacial

[adj] extremely cold; "an arctic climate"; "let's get inside; I'm freezing"; "a frigid day"; "gelid waters of the North Atlantic"; "glacial winds"; "icy hands"; "polar weather"
[adj] 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"
[adj] relating to or derived from a glacier; "glacial deposit"

Webster (1913) Definition: Gla"cial, a. [L. glacialis, from glacies ice: cf. F.
glacial.]
1. Pertaining to ice or to its action; consisting of ice;
frozen; icy; esp., pertaining to glaciers; as, glacial
phenomena. --Lyell.

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 or period (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 or hypothesis. (Geol.) See {Glacier
theory}, under Glacier.

Synonyms: arctic, cold, freezing, frigid, frosty, frozen, gelid, icy, polar, wintry

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