detonation

== English == === Etymology === From French détonation; equivalent to detonate +‎ -ion. === Pronunciation === (UK) IPA(key): /dɛtəˈneɪʃən/ Rhymes: -eɪʃən === Noun === detonation (countable and uncountable, plural detonations) (chemistry) An explosion or sudden report made by the near-instantaneous decomposition or combustion of unstable substances. Specifically, combustion that spreads supersonically via shock compression. (by extension) Any sudden explosion made by an exothermic process (whether chemical or not) that produces a supersonic shock wave. (mechanical engineering) Engine knocking, a type of improper combustion in gasoline piston engines. ==== Usage notes ==== The use of detonation to refer to engine knocking is mostly confined to aircraft engines. ==== Antonyms ==== (with respect to speed of propagation): deflagration ==== Hypernyms ==== ==== Derived terms ==== ==== Related terms ==== ==== Translations ==== === Anagrams === denotation, taeniodont == Danish == === Etymology === From French détonation === Pronunciation === IPA(key): /detonaˈɕoˀn/ === Noun === detonation c (singular definite detonationen, plural indefinite detonationer) detonation ==== Declension ==== === Further reading === “detonation” in Den Danske Ordbog == Swedish == === Noun === detonation c detonation ==== Declension ==== ==== Related terms ==== detonera ==== See also ==== brisad explosion krevad === References === “detonation”, in Svensk ordbok [Dictionary of Swedish] (in Swedish) “detonation”, in Svenska Akademiens ordbok [Dictionary of the Swedish Academy] (in Swedish)