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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.


(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 ?
Tenders are invited for Supply of hot tops/ exothermic sleeves for 550 mm dia mould
The incubator is a thermal blanket which has exothermic body heat pads and semi-solid hydrogenated oils and provides heat to prematurely born infants who otherwise cannot generate enough body heat by themselves, accounting for neonatal deaths.
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.
Polymerization is heat-initiated, and the Portland cement exothermic reaction accelerates curing.
One of the factors that determine the evolution of detonation processes in energy condensed systems based on ammonium saltpeter is the rate of exothermic decomposition in the system which, in its turn, is caused by the parameters of ammonium nitrate thermal decomposition.
For a range of exothermic and large-scale reactions, the system has been shown to improve reproducibility of results, increase selectivity and reduce potentially unwanted side reactions.
Kaolin demonstrated 2 exothermic effects at 257, 400[degrees]C and 2 endothermic--at 569 and 730[degrees]C.
For synthesis of polycarbynes, studies on Wurtz coupling of sp3 coordinated bromoform initiated with alkali metals have been published, but these reactions are extremely exothermic and potentially violent.
75, and 1:1 showed an exothermic reaction at 150[degrees]C, resins with eq-MRs of 1:2 and 1:3 exhibited exothermic peaks at 185[degrees]C, and resins with an eq-MR of 1:4 presented an exothermic peak at 180[degrees]C.
Exothermic blowing agents are based on azodicarbonamide and hydrazides and release maintly nitrogen.
Two new exothermic chemical foaming agents (CFAs) from Bergen International, Hasbrouck Heights, N.
Line emission in the chromosphere is fundamentally linked to the dissipation of heat associated with exothermic condensation reactions.