ANTIKNOCK

antiknock, antiknocking

(adjective) suppressing or eliminating engine knock in combustion engines; ā€œantiknock propertiesā€; ā€œantiknock ratingā€

antiknock

(noun) any of various compounds that are added to gasoline to reduce engine knocking

Source: WordNet® 3.1


Etymology

Adjective

antiknock (not comparable)

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

Noun

antiknock (plural antiknocks)

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

Source: Wiktionary



RESET




Word of the Day

21 April 2025

ENCYCLOPEDIA

(noun) a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty


coffee icon

Coffee Trivia

Brazil is the largest coffee producer in the world. Each year Brazil exports more than 44 million bags of coffee. Vietnam follows at exporting over 27 million bags each year.

coffee icon