preignition

American  

[pree-ig-nish-uhn] / ˌpri ɪgˈnɪʃ ən /

noun

1. ignition of the charge in an internal-combustion engine earlier in the cycle than is compatible with proper operation.

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Etymology

Origin of preignition

First recorded in 1895–1900; pre- + ignition

Example Sentences

“We want to keep this fire on the ground — scorch height, but no higher,” Jason Wingard, the burn boss, told his crew in the preignition briefing.

From Washington Post • Jun. 17, 2019

Seconds later, preignition pyros fired, igniting the main engines, and the MAV lurched upward.

From "The Martian" by Andy Weir