exothermic or ex·o·ther·mal [ek-soh-thur-mik] WORD ORIGIN adjective Chemistry. noting or pertaining to a chemical change that is accompanied by a liberation of heat (opposed to endothermic). Liberaldictionary.com

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  • Origin of exothermic First recorded in 1880–85; exo- + thermic Related formsex·o·ther·mi·cal·ly, ex·o·ther·mal·ly, adverbex·o·ther·mic·i·ty [ek-soh-ther-mis-i-tee] /ˌɛk soʊ θərˈmɪs ɪ ti/, noun Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019 British Dictionary definitions for exothermicity exothermic exothermal adjective (of a chemical reaction or compound) occurring or formed with the evolution of heatCompare endothermic, exoergic Derived Formsexothermically or exothermally, 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 exothermicity exothermic adj.

    1879, from French exothermique (1879), from exo- + thermique, ultimately from Greek therme “heat” (see thermal).

    Online Etymology Dictionary, © 2010 Douglas Harper exothermicity in Medicine exothermic [ĕk′sō-thûr′mĭk] adj. Of or relating to a chemical reaction during which heat is released. Of or relating to the external warmth of the body. The American Heritage® Stedman’s Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. exothermicity in Science exothermic [ĕk′sō-thûr′mĭk] Relating to a chemical reaction that releases heat. Compare endothermic. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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