antiknock

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

any of various compounds that are added to gasoline to reduce engine knocking
• Hypernyms:
compound, chemical compound
• Hyponyms:
tetraethyl lead, lead tetraethyl

II - adjective

suppressing or eliminating engine knock in combustion engines
- antiknock properties
- antiknock rating
• Syn:
antiknocking
• Similar to:
leaded