1. antiknock - Noun
2. antiknock - Adjective
3. antiknock - Adjective Satellite
any of various compounds that are added to gasoline to reduce engine knocking
suppressing or eliminating engine knock in combustion engines
Source: WordNetantiknock properties Source: Internet
antiknock rating Source: Internet
Antiknock additives A plastic container for storing gasoline used in Germany Almost all countries in the world have phased out automotive leaded fuel. Source: Internet