/ Dictionary / Index T thromboxane: Meaning and Definition of Find definitions for: throm•box•ane Pronunciation: (throm-bok'sān), [key] — n. Biochem. a compound, CHO, formed in blood platelets, that constricts blood vessels and promotes clotting. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thrombosis thrombus Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language