Definition of exothermic in English:

exothermic

Line breaks: exo|ther¦mic
Pronunciation: /ˌɛksə(ʊ)ˈθəːmɪk
 
/

adjective

Chemistry
  • 1(Of a reaction or process) accompanied by the release of heat. The opposite of endothermic ( sense 1).
    More example sentences
    • Sodium hydroxide dissolved into water is an exothermic process, ammonium nitrate dissolved in water is an endothermic process.
    • The rusting of iron is an exothermic reaction and this process is used in hand warmers which are utilized in cold regions.
    • When fireworks are ignited, the chemical compounds react with each other in an exothermic reaction - releasing energy.
  • 1.1(Of a compound) formed from its constituent elements with a net release of heat.
    More example sentences
    • Little heat is needed in the roasting of sulfide ores because the oxidation of the sulfide ion to sulfur dioxide is exothermic.

Derivatives

exothermically

adverb
More example sentences
  • This is because fluorine generally reacts exothermically to form products with stable C-F bonds.

Origin

late 19th century: from French exothermique.

More definitions of exothermic

Definition of exothermic in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day maelstrom
Pronunciation: ˈmeɪlstrəm
noun
a powerful whirlpool in the sea