/ Dictionary / Index D dextran: Meaning and Definition of Find definitions for: dex•tran Pronunciation: (dek'strun), [key] — n. Chem., Pharm. a viscous polysaccharide, composed of dextrose, produced by bacterial action on sucrose: used in confections and lacquers and in medicine chiefly as an extender for blood plasma. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dextrality dextranase Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language