/ Dictionary / Index T tetramethyllead: Meaning and Definition of Find definitions for: tet•ra•meth•yl•lead Pronunciation: (te"tru-meth"ul-led'), [key] — n. Chem. a colorless liquid, (CH)Pb, insoluble in water, slightly soluble in alcohol and benzene, used as an antiknock agent in gasoline. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tetrameter tetrandrous Related Content Daily Word Quiz: sublime Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language