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compression ignition

American

noun

ignition of engine fuel by the heat of air compressed in the cylinders into which the fuel is introduced.

Other Word Forms

compression-ignition

adjective

Etymology

Origin of compression ignition

First recorded in 1925–30

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.