Dictionary![]() ![]() tet•ra•eth•yl•leadPronunciation: (te"tru-eth"ul-led'), [key] —n. Chem. a colorless, oily, water-insoluble, poisonous liquid, (C2H5)4Pb, used as an antiknock agent in gasoline. Also,tet'raeth'yl lead'.Also called lead tetraethyl, TEL Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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