preignition

noun
pre·​ig·​ni·​tion | \ ˌprē-ig-ˈni-shən How to pronounce preignition (audio) \

Definition of preignition

: ignition in an internal combustion engine while the inlet valve is open or before compression is completed

First Known Use of preignition

1898, in the meaning defined above

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The first known use of preignition was in 1898

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