Definition of tetraethyl lead in English:

tetraethyl lead


  • [mass noun] A toxic colourless oily liquid made synthetically and used as an anti-knock agent in leaded petrol.

    • ‘Organic lead compounds include tetramethyl and tetraethyl lead, which were heavily used as a gasoline additive, but this use has been drastically reduced in the US beginning in the late 1970s.’
    • ‘In fact, tetraethyl lead in unleaded gasoline is replaced with a mixture (with antistroke properties) of benzene and its homologues (despite the fact that benzene does not exceed 1% in unleaded gasoline).’
    • ‘The advantage of tetraethyl lead was that it allowed auto manufacturers to use lower quality materials in the production of engines.’
    • ‘For most of the twentieth century, metallic sodium was heated with lead to form an alloy as the first step in the production of tetraethyl lead, an antiknock gasoline additive.’
    • ‘When added to gasoline in minute amounts, tetraethyl lead prevents engine knock and increases the gasoline's octane rating.’


tetraethyl lead