antiknock
noun
No English definition recorded for this entry.
L316339 on Wikidata ↗adjective
No English definition recorded for this entry.
L334486 on Wikidata ↗Wiktionary
adj
Etymology: Etymology tree Proto-Indo-European *h₂ent- Proto-Indo-European *-s Proto-Indo-European *h₂énts Proto-Indo-European *-i Proto-Indo-European *h₂énti Ancient Greek ᾰ̓ντῐ́ (ăntĭ́) Ancient Greek ἀντι- (anti-)der. English anti- English knock English antiknock From anti- + knock.
- Of an additive added to petroleum/gasoline to reduce the occurrence of engine knock.
noun
Etymology: Etymology tree Proto-Indo-European *h₂ent- Proto-Indo-European *-s Proto-Indo-European *h₂énts Proto-Indo-European *-i Proto-Indo-European *h₂énti Ancient Greek ᾰ̓ντῐ́ (ăntĭ́) Ancient Greek ἀντι- (anti-)der. English anti- English knock English antiknock From anti- + knock.
- Such a substance, usually tetraethyl lead (also MMT, MTBE and ethanol).