A substance (such as tetraethyl lead) added to gasoline to inhibit preignition.
More example sentences
- The single most important human exposure to lead was lead aerosol, formed by combustion of lead anti-knock additives in petrol, he said.
- It focuses on efforts to cover up the health risks associated with lead in paints and ‘anti-knock’ gasoline and the vinyl chloride used in many plastics.
- One commonly used application is in the production of anti-knock gasoline.