Chemistry. noting or pertaining to a chemical change that is accompanied by an absorption of heat (opposed to exothermic).
Also en·do·ther·mal [en-doh-thur-muh l] /ˌɛn doʊˈθɜr məl/
Origin of endothermic
Related formsen·do·ther·mi·cal·ly, adverben·do·ther·my, en·do·ther·mism, noun
< French endothermique
(1879); see endo-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for endothermic
Historical Examples of endothermic
All chemical compounds are either “endothermic” or “exothermic.”
Acetylene is endothermic, liberating heat when it is decomposed, absorbing it when it is produced.
Another idea of the meaning of endothermic is obtained from acetylene.
The stability of endothermic bodies like nitric oxide and ozone at low temperatures requires further investigation.
In endothermic compounds energy, in some form, has been taken up in the act of formation of the compound.
British Dictionary definitions for endothermic
Derived Formsendothermically, adverbendothermism, noun (of a chemical reaction or compound) occurring or formed with the absorption of heatCompare exothermic, endoergic
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 endothermic
1884, from French endothermique (1879); see endo- + thermal.
Online Etymology Dictionary, © 2010 Douglas Harper
Related formsen′do•ther′my n.
Of or relating to a chemical reaction during which there is absorption of heat.
Of or relating to an endotherm; warm-blooded.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Relating to a chemical reaction that absorbs heat. Compare exothermic.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.