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n. A substance, such as tetraethyl lead, added to gasoline to reduce engine knock.

adj. of an additive added to petroleum/gasoline to reduce the occurrence of engine knock.

n. Such a substance, usually tetraethyl lead (also MMT, MTBE and ethanol)

n. any of various compounds that are added to gasoline to reduce engine knocking

adj. suppressing or eliminating engine knock in combustion engines

"Distillate fuels and heavy oils were heated under pressure in large drums until they cracked into smaller molecules with better antiknock characteristics."

leaded   

Bach    Bangkok    Bloch    Block    Brock