Dictionary.com

antiknock

[ an-tee-nok, an-tahy-, an-tee-nok, an-tahy- ]
/ ˌæn tiˈnɒk, ˌæn taɪ-, ˈæn tiˌnɒk, ˈæn taɪ- /
Save This Word!

adjective

noting or pertaining to a substance, as tetraethyllead or ferrocene, used as a fuel additive for an internal-combustion engine to eliminate or minimize knock.

noun

such a substance added to fuel in an internal-combustion engine.

QUIZZES

THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?

Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
Question 1 of 8
Mississippi’s nickname comes from the magnificent trees that grow there. What is it?

Origin of antiknock

First recorded in 1920–25; anti- + knock
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for antiknock

antiknock
/ (ˌæntɪˈnɒk) /

noun

a compound, such as lead tetraethyl, added to petrol to reduce knocking in the engine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Tired of Typos? Get Help Now!