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autoignition

American  
[aw-toh-ig-nish-uhn] / ˌɔ toʊ ɪgˈnɪʃ ən /

noun

  1. Automotive. the spontaneous ignition of fuel when introduced into the combustion chamber of an internal-combustion engine, as a result either of glowing carbon in the chamber or of the heat of compression.

  2. spontaneous combustion.

Etymology

Origin of autoignition

auto- 1 + ignition

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.