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 (ĕk′sō-thûr′mĭk) also ex·o·ther·mal (-məl)
Releasing heat: an exothermic reaction.

ex′o·ther′mi·cal·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌɛksəʊˈθɜːmɪk) or


(Chemistry) (of a chemical reaction or compound) occurring or formed with the evolution of heat. Compare endothermic, exoergic
ˌexoˈthermically, ˌexoˈthermally adv
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌɛk soʊˈθɜr mɪk)

also ex`o•ther′mal,

noting or pertaining to a chemical change that is accompanied by a liberation of heat (opposed to endothermic).
ex`o•ther′mi•cal•ly, adv.
ex`o•ther•mic′i•ty (-θərˈmɪs ɪ ti) n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


Releasing heat: an exothermic chemical reaction. Compare endothermic.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.exothermic - (of a chemical reaction or compound) occurring or formed with the liberation of heat
energy-releasing, exoergic - (of a nuclear reaction) occurring with evolution or releasing of energy
endothermal, endothermic, heat-absorbing - (of a chemical reaction or compound) occurring or formed with absorption of heat
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[ˌɛksəʊˈθɜːmɪk] adjesotermico/a
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
In addition to allowing unattended operation (even overnight), active temperature control also enables responsive control of exothermic reactions, constant rate cooling to enhance polymorph studies and significant improvement in reaction reproducibility.
Continuous flow is particularly suitable for fast, potentially highly exothermic reactions, where safety concerns may prohibit the use of large-scale batch protocols.
Sweeping it up generates friction which can cause it to ignite, and also could bring it into contact with things the components of the molecule might like better (like the organics in dust, or a droplet of water on the lab bench etc), producing exothermic reactions generating heat, so no-go there.
The DSC curves show endothermic and exothermic reactions during calcination, such as desorption of surface water (H2O), dehydroxy lation (structural OH-groups) and the transformation to mullite and cristobalite, with resultant temperature effects of dehydroxylation and polymorphic transformation strongly dependent on kaolinite structural order (Ece et al., 2003; Ekosse, 2008).
The exothermic reactions of methacrylate materials can be uncomfortable for many patients, and the smell and taste of these materials are unpleasant as well.
"Supercritical microfluidics combines the advantage of size reduction with the unique properties of supercritical fluids, opening new chemical possibilities, supercritical water and carbon dioxide." It also enables synthesis of high-quality nanocrystals; controlled, low-temperature reactions between explosive reactants; and investigation of exothermic reactions and novel chemistry applications.
Third, scale up from laboratory extruder to production unit can be heat transfer limited for highly exothermic reactions. The volume inside an extruder of constant 1/d scales as the ratio of the diameter cubed, whereas the surface area for heat transfer scales as the ratio of the diameter squared.
The OZSBO/pMDI resins with eq-MRs of 1:0.5, 1:0.75, and 1:1 exhibited exothermic reactions at 150[degrees]C, eqMRs of 1:2 and 1:3 showed exothermic peaks at 185[degrees]C, and an eq-MR of 1:4 presented an exothermic peak at 180[degrees]C.
* those associated with exothermic reactions (i.e., where heat is liberated during the reaction) and
I use this demonstration when teaching the fire triangle (fuel, heat, and oxygen), combustion reactions, exothermic reactions, signs of chemical reactions or chemical reaction rates and how chemical reaction rates can be altered.