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precombustion

adjective

pre·​com·​bus·​tion ˌprē-kəm-ˈbəs-chən How to pronounce precombustion (audio)
variants or pre-combustion
: situated, occurring, or used before engine combustion or the combustion stage of a process
precombustion fuel treatment
a precombustion reaction
see also precombustion chamber, precombustion engine

Word History

First Known Use

1923, in the meaning defined above

Time Traveler
The first known use of precombustion was in 1923

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