/ Dictionary / Index T toxico-: Meaning and Definition of Find definitions for: toxico- Pronunciation: [key] a combining form representing toxic in compound words:Cf. toxicology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. toxicity toxicogenic Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language