[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. acetic acid of at least 99.5 percent concentration, solidifying at 16.7°C. noun 1. pure acetic acid (more than 99.8 per cent)
noun, Geology. 1. material, as gravel, sand, or clay, transported and deposited by a glacier or by glacial meltwater.
noun 1. Also called glacial period, ice age. the geologically recent Pleistocene Epoch, during which much of the Northern Hemisphere was covered by great ice sheets. 2. any one of the Permian, Carboniferous, Cambrian, or Precambrian glaciations.
[gley-shuh-list] /ˈgleɪ ʃə lɪst/ noun 1. a person who studies geological phenomena involving the action of ice, especially of glaciers.