antiknock antiknock  /ˌæn ti ˈnɑk/

Definition(s):

  1. (n) any of various compounds that are added to gasoline to reduce engine knocking
  2. (adj) suppressing or eliminating engine knock in combustion engines

Usage(s):

  1. Since leaded antiknock compounds accounted for 36% of those sales and a hefty 60% of the profits, Ethyl may have more knocks ahead.
  2. Knocking quality is measured in octane, a 100% antiknock laboratory fluid.
  3. Because methane is h'gh in antiknock value, special high-compression engines which save 15% in fuel consumption are now available for this fuel.
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