Dictionary
Words, grammatical forms and meanings linked to the ontology.
engine knock en · NOUN
Meanings
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(uncountable) a rattling, pinging, or tapping sound caused by improper combustion, where the air-fuel mixture ignites spontaneously in the cylinders before the spark plug fires, or in multiple spots simultaneously
Once leaded fuel solved the problem of engine knock, cars quickly displaced horses and motorised transportation took over the world.
2025 September 11, Kate Marvel, “‘We’ve done it before’: how not to lose hope in the fight against ecological disaster”, in The Guardian: