lead tetraethyl lead-tempering • lead time · · · Info · Definitions · Synonyms · Characters · · lead tetraethyl · · Text Common · · Latin · · Scripts 15 · · Length 4 · · Syllables Definitions · · · (noun) a clear oily poisonous liquid added to gasoline to prevent knocking. Synonyms: tetraethyl lead, lead tetraethyl. · · Noun Definition 1 Synonyms · · · tetraethyl lead · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 l latin small letter l U+006C r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079