antiknock 1
noundomain: substance
Princeton WordNet [ver.3.1]
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EnglishDefinition
any of various compounds that are added to gasoline to reduce engine knocking
Hypernym
compound 2
noun
(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
EnglishDerivationally related form
antiknock 1
adjective
suppressing or eliminating engine knock in combustion engines
Hyponym
a clear oily poisonous liquid added to gasoline to prevent knocking
