Breadcrumb Home > Dictionary > Index T TCDD: Meaning and Definition of Find definitions for: TCDD Pronunciation: [key] dioxin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. TCBM TCE ✖ Related Content Daily Word Quiz: acronym Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language