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The Collaborative International Dictionary
Exothermic

Exothermic \Ex`o*ther"mic\, a. [Pref. exo- + thermic.] (Chem.) Characterized by, or formed with, evolution of heat; as, an exothermic reaction; -- opposed to endothermic.

Douglas Harper's Etymology Dictionary
exothermic

"relating to a liberation of heat," 1879, modeled on French exothermique (1879); see exo- + thermal.

Wiktionary
exothermic

a. 1 (context chemistry of a reaction English) That releases energy in the form of heat. 2 (context chemistry of a compound English) That releases heat during its formation, and absorbs it during its decomposition 3 (context zoology English) Of an animal whose body temperature is regulated by external factors; cold-blooded

WordNet
exothermic

adj. (of a chemical reaction or compound) occurring or formed with evolution of heat [syn: exothermal, heat-releasing] [ant: endothermic]

Wikipedia

Usage examples of "exothermic".

Esolesy Ki the Lishcyn but not the Esen of my core, warming the surrounding air slightly with the exothermic result, exulting in the expansion of sensation and relief of effort as my molecular self assumed its true configuration: the teardrop web-form of my kind.

Her time in the Trans-Pecos had brought out her exothermic tendencies.

The reaction was exothermic, which required that the bottom of the retort be encased in a large tub of cold water to draw off heat.

The ordinary exothermic reactions which fuel Mercurian life do not produce enough energy for the cell-duplication which is growth.

The reaction is very efficient, ninety-nine percent in fact, and is exothermic, which means it requires no input of heat to make it work, just the presence of a ruthenium catalyst.

A dazzling range of forest-dwellers had been observed, from large, carnivorous exothermic flyers and gliders-all eight-limbed, if wings were counted-to patches of something like fungus apparently feeding directly on the trees themselves.

By the time the whole exothermic conglomerate finally crashed into the side of the Death Star, the impact was momentous enough to actually jolt the battle station, setting off internal explosions and thunderings all through its network of reactors, munitions, and halls.

Initial surveys had found that temperatures could drop by as much as forty degrees within an hour, but the archaeological team had brought batteries, warm clothes, heated shelters, and exothermic blankets.

During the visit, toxic vapors were released, causing an exothermic reaction.

The airscrew was driven by an engine powered by a chemical exothermic reaction—.

A rise in the victim's body temperature triggers the bursting of the sacs, and the chemicals in turn undergo a violently exothermic reaction with each other—.

A rise in the victim's body temperature triggers the bursting of the sacs, and the chemicals in turn undergo a violently exothermic reaction with each other -- killing the parasite, damaging the host's surrounding tissues, and stimulating more nearby parasites to go off.

A reciprocating engine was a collection of miniature heat engines using (in a basically inefficient cycle) a small percentage of an exothermic chemical reaction, a reaction which was started and stopped every split second.