/ Dictionary / Index S serum albumin: Meaning and Definition of Find definitions for: se'rum albu'min Pronunciation: [key] the principal protein of blood plasma, important in osmotic regulation of the blood and transport of metabolites. the commercial form of this substance, used in dye preparations, foodstuffs, and in medicine esp. in the treatment of shock. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. serum serum hepatitis Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language