antiknock(redirected from antiknocking)
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a compound, such as lead tetraethyl, added to petrol to reduce knocking in the engine
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
Resisting detonation or pinging in spark-ignited engines.
A substance, such as tetraethyllead, added to motor and aviation gasolines to increase the resistance of the fuel to knock in spark-ignited engines. Also known as antidetonant.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.