/ Dictionary / Index T tetracene: Meaning and Definition of Find definitions for: tet•ra•cene Pronunciation: (te'tru-sēn"), [key] — n. Chem. naphthacene. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tetracaine tetrachloride Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language