Antiknock

adj, noun

Definitions

Adjective
  1. 1
    Of an additive added to petroleum/gasoline to reduce the occurrence of engine knock. not-comparable
Adjective
  1. 1
    suppressing or eliminating engine knock in combustion engines wordnet
Noun
  1. 1
    Such a substance, usually tetraethyl lead (also MMT, MTBE and ethanol).
  2. 2
    any of various compounds that are added to gasoline to reduce engine knocking wordnet

Etymology

Etymology 1

From anti- + knock.

Etymology 2

From anti- + knock.

Next best steps

Mini challenge

Unscramble this word: antiknock