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compression ignition

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

Origin of compression ignition

First recorded in 1925–30
Related formscom·pres·sion-ig·ni·tion, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018