antiknock

noun

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

adjective

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

Similar Words

ant /ɛnt/ antacids antagonist /ænˈtæɡənɪst/ antagonists antagonize antagonizing antarctic /ænˈtɑːktɪk/ antbird antebellum anteceded