exothermic
/ˌɛksə(ʊ)ˈθəːmɪk
/adjective Chemistry
1(Of a reaction or process) accompanied by the release of heat. The opposite of endothermic (sense 1).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.Little heat is needed in the roasting of sulfide ores because the oxidation of the sulfide ion to sulfur dioxide is exothermic.
Derivatives
exothermal
exothermally
exothermically
- This is because fluorine generally reacts exothermically to form products with stable C-F bonds.
Origin
Late 19th century: from French exothermique.
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