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adjective Chemistry.
noting or pertaining to a chemical change that is accompanied by a liberation of heat (opposed to endothermic).
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To exothermic
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Exothermic
is always a great word to know.
So is formaldehyde. Does it mean:
| to heat intensely or roast |
| a colorless, toxic, water-soluble gas having a suffocating odor, used chiefly as a disinfectant and preservative, contained in resins and plastics |
Example Sentences
- When water is formed by burning hydrogen, that's an exothermic reaction.
Collins
World English Dictionary
| exothermic or exothermal (ˌɛksəʊˈθɜːmɪk) | |
| —adj | |
| endothermic Compare exoergic (of a chemical reaction or compound) occurring or formed with the evolution of heat | |
| exothermal or exothermal | |
| —adj | |
| exo'thermically or exothermal | |
| —adv | |
| exo'thermally or exothermal | |
| —adv | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History
exothermic
from Fr. exothermique (1879), from Gk. exo- + therme "heat" (see thermal).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
exothermic ex·o·ther·mic (ěk'sō-thûr'mĭk) or ex·o·ther·mal (-məl)
adj.
Of or relating to a chemical reaction during which heat is released.
Of of 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.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
exothermic  (ěk'sō-thûr'mĭk) Pronunciation Key
Relating to a chemical reaction that releases heat. Compare endothermic. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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