compression ignition

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

Origin:
1925–30

compression-ignition, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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But you could use diesel-style compression ignition with a conventional petrol engine.
Diesel engines work by compression ignition, which is the source of the noise you hear when a diesel powered vehicle rolls by.
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