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detonation

[det-n-ey-shuh n] /ˌdɛt nˈeɪ ʃən/
noun
1.
the act of detonating.
2.
an explosion.
3.
Machinery. the premature spontaneous burning of a fuel–air mixture in an internal-combustion engine due to the high temperature of air compressed in a cylinder.
Origin
1670-1680
1670-80; < Medieval Latin dētonātiōn- (stem of dētonātiō), equivalent to Latin dētonāt(us) (see detonate) + -iōn- -ion
Related forms
detonative, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for detonations

detonation

/ˌdɛtəˈneɪʃən/
noun
1.
an explosion or the act of exploding
2.
the spontaneous combustion in an internal-combustion engine of part of the mixture before it has been reached by the flame front, causing the engine to knock
3.
(physics) rapid combustion, esp that occurring within a shock wave
Derived Forms
detonative, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for detonations

detonation

n.

1670s, "explosion accompanied by loud sound," from French détonation, from Medieval Latin detonationem (nominative detonatio), from Latin detonare "to thunder down, to release one's thunder, roar out," from de- "down" (see de-) + tonare "to thunder" (see thunder (n.)). Sense of "act of causing to explode" (mid-18c.) developed in French.

Online Etymology Dictionary, © 2010 Douglas Harper
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