[gley-shuh l] /ˈgleɪ ʃəl/
of or relating to or ice sheets.
resulting from or associated with the action of ice or :
characterized by the presence of ice in extensive masses or .
bitterly cold; icy:
a glacial winter wind.
happening or moving extremely slowly:
The work proceeded at a glacial pace.
icily unsympathetic or immovable:
a glacial stare; glacial indifference.
Chemistry. of, relating to, or tending to develop into icelike crystals:
glacial phosphoric acid.
characterized by the presence of masses of ice
relating to, caused by, or deposited by a glacier
extremely cold; icy
cold or hostile in manner: a glacial look
(of a chemical compound) of or tending to form crystals that resemble ice: glacial acetic acid
very slow in progress: a glacial pace
1650s, “cold, icy,” from French glacial, from Latin glacialis “icy, frozen, full of ice,” from glacies “ice,” probably from PIE root *gel- “cold” (cf. Latin gelu “frost;” see cold (adj.)). Geological sense apparently coined in 1846 by British naturalist Edward Forbes (1815-1854). Related: Glacially.
noun 1. finely ground rock material produced by the grinding action of a glacier on its bed.
noun 1. waters of a glacial stream in which particles of light-colored silt are suspended.
- Glacial striation
glacial striation One of several, long, straight, parallel lines or grooves in a bedrock surface, formed by boulders, gravel, and pebbles embedded in a glacier that has passed over the surface.
- Glacial valley
glacial valley A steep-sided, U-shaped valley formed by the erosional forces of a moving glacier.