(redirected from Exothermic reactions)
Also found in: Thesaurus, Medical, Encyclopedia.


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

ex′o·ther′mi·cal·ly adv.


(ˌɛksəʊˈθɜːmɪk) or


(Chemistry) (of a chemical reaction or compound) occurring or formed with the evolution of heat. Compare endothermic, exoergic
ˌexoˈthermically, ˌexoˈthermally adv


(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.


Releasing heat: an exothermic chemical reaction. Compare endothermic.
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


[ˌɛksəʊˈθɜːmɪk] adjesotermico/a
References in periodicals archive ?
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.
The exothermic reactions of methacrylate materials can be uncomfortable for many patients, and the smell and taste of these materials are unpleasant as well.
It also enables synthesis of high-quality nanocrystals; controlled, low-temperature reactions between explosive reactants; and investigation of exothermic reactions and novel chemistry applications.
Strongly exothermic reactions can cause the reaction to rise above the desired temperature even with the cooling capability of EasyMax and OptiMax.
a) The lower internal volume of the extruder and higher surface to volume ratio provide more effective heat transfer to keep exothermic reactions under control.
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.
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.
By comparison, the addition of a material such as SiC, which produces exothermic reactions during the oxygen blow, does not require any capital investment (Fig.
Among the topics are nonstationary theory of the thermal explosion for monomolecular exothermic reactions, the material science chemistry of electrochemical microsensors and applications for biofilm research, a green process to prepare hydrophobic and transparent carbon nanotube-based surfaces, innovations in wood science, waste as a resource for high value materials, and applying electron backscatter diffraction to shape memory alloys.