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Meaning of dextran

dex•tran

Pronunciation: (dek'strun), [key]
— n. Chem., Pharm.
  1. 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.