Lexic.us

Definition of Exothermic

1. Adjective. (of a chemical reaction or compound) occurring or formed with the liberation of heat.

Definition of Exothermic

1. a. Characterized by, or formed with, evolution of heat; as, an exothermic reaction; -- opposed to endothermic.

Definition of Exothermic

1. Adjective. (chemistry of a reaction) That releases energy in the form of heat. ¹

2. Adjective. (chemistry of a compound) That releases heat during its formation, and absorbs it during its decomposition ¹

3. Adjective. (zoology) Of an animal whose body temperature is regulated by external factors; cold-blooded ¹

¹ Source: wiktionary.com

Definition of Exothermic

1. [adj]

Medical Definition of Exothermic

1. Describes a chemical reaction that releases energy (usually in the form of heat). (09 Oct 1997)

Lexicographical Neighbors of Exothermic

Literary usage of Exothermic

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Treatise on the Principles of Chemistry by Matthew Moncrieff Pattison Muir (1884)
"A distinction is generally drawn between so-called exothermic and ... It has been stated that if an exothermic change is possible it will always occur. ..."

2. Organic Agricultural Chemistry (the Chemistry of Plants and Animals): A by Joseph Scudder Chamberlain (1916)
"exothermic and Endothermic Reactions. — All chemical reactions are of two kinds in their ... The exothermic reaction converts potential energy into kinetic, ..."

3. A Treatise on Producer-gas and Gas-producers by Samuel S. Wyer (1907)
"exothermic reaction. Any chemical change that evolves heat is called exothermic, and is indicated by the sign +. § 36. Law of definite proportion. ..."

4. Thermodynamics and Chemistry: A Non-mathematical Treatise for Chemists and by Pierre Maurice Marie Duhem (1903)
"Dissociation of exothermic compounds and formation of endothermic compounds by rise in temperature.—Some purely chemical applications will indicate more ..."

5. A Treatise on the Principles of Chemistry by Matthew Moncrieff Pattison Muir (1889)
"The following example will serve to illustrate the use of e terms endothermic and exothermic. Naumann ' shewed that no action occurs when dry sulphuretted ..."

6. The Chemistry of Petroleum and Its Substitutes: A Practical Handbook by Charles Kenneth Tinkler, Frederick Challenger (1915)
"... the heats of formation of the constituent substances must either be very small, or exothermic and endothermic compounds must be present in amounts which ..."

7. The Chemical News and Journal of Industrial ScienceChemistry (1900)
"ALL chemical combinations may be divided into two great classes—endothermic and exothermic. In endothermic compounds the atoms are held together in such a ..."

8. Modern chemistry by William Ramsay (1907)
"All the phenomena of combustion are exothermic reactions. We are familiar with many examples of this, as when coal burns, when hydrogen and oxygen explode, ..."

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