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Meaning of spark knock | Babel Free

Noun CEFR B2

Definitions

The sound produced, in an internal combustion engine, by the ignition of the fuel-air mixture before the piston reaches top dead center.

countable, uncountable

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

spark plug spark spread spark test spark testing sparke Sparked

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