preignition
noun
pre·ig·ni·tion
ˌprē-ig-ˈni-shən 
: ignition in an internal combustion engine while the inlet valve is open or before compression is completed
Examples of preignition in a Sentence
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The warm-up, preignition, and main combustion initiation sequence of the R-7 took 10 to 15 seconds to gather force before the rocket lifted off.
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Jim Oberg, Discover Magazine, 16 Apr. 2014
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Jim Oberg, Discover Magazine, 16 Apr. 2014
Cite this Entry
“Preignition.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/preignition. Accessed 22 May. 2025.
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