preignition

[ pree-ig-nish-uhn ]

noun

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

Word History and Origins

Origin of preignition¹

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

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

From Literature