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glacial

[gley-shuh l]
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adjective
  1. of or relating to glaciers or ice sheets.
  2. resulting from or associated with the action of ice or glaciers: glacial terrain.
  3. characterized by the presence of ice in extensive masses or glaciers.
  4. bitterly cold; icy: a glacial winter wind.
  5. happening or moving extremely slowly: The work proceeded at a glacial pace.
  6. icily unsympathetic or immovable: a glacial stare; glacial indifference.
  7. Chemistry. of, relating to, or tending to develop into icelike crystals: glacial phosphoric acid.
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Origin of glacial

1650–60; < Latin glaciālis icy, equivalent to glaci(ēs) ice + -ālis -al1
Related formsgla·cial·ly, adverbnon·gla·cial, adjectivenon·gla·cial·ly, adverbun·gla·cial, adjectiveun·gla·cial·ly, adverb

Synonyms

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4. chill, freezing, frigid, wintry. 6. forbidding, unfriendly, hostile.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for glacially

glacial

adjective
  1. characterized by the presence of masses of ice
  2. relating to, caused by, or deposited by a glacier
  3. extremely cold; icy
  4. cold or hostile in mannera glacial look
  5. (of a chemical compound) of or tending to form crystals that resemble iceglacial acetic acid
  6. very slow in progressa glacial pace
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Derived Formsglacially, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for glacially

glacial

adj.

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.

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Online Etymology Dictionary, © 2010 Douglas Harper

glacially in Science

glacial

[glāshəl]
  1. Relating to or derived from a glacier.
  2. Characterized or dominated by the existence of glaciers, as the Pleistocene Epoch.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.