Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Adjective: antiknock  ,an-tee'nók
  1. Suppressing or eliminating engine knock in combustion engines
    "antiknock rating";
    - antiknocking
Noun: antiknock  ,an-tee'nók
  1. Any of various compounds that are added to petrol to reduce engine knocking

Derived forms: antiknocks

See also: leaded

Type of: chemical compound, compound