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[te-truh-meth-uh l-led]
See more synonyms for tetramethyllead on Thesaurus.com
noun Chemistry.
  1. a colorless liquid, (CH3)4Pb, insoluble in water, slightly soluble in alcohol and benzene, used as an antiknock agent in gasoline.
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Origin of tetramethyllead

First recorded in 1960–65; tetra- + methyl + lead2
Also called TML
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018