Definition of tetraethyl lead in English:

tetraethyl lead

Syllabification: tet·ra·eth·yl lead
Pronunciation: /ˌtetrəˈeTHəl ˈled


  • A toxic colorless oily liquid made synthetically and used as an antiknock agent in leaded gasoline.
    • Chemical formula: Pb(C2H5)4
    More example sentences
    • 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.
    • 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).

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