/ Dictionary / Index S serology: Meaning and Definition of Find definitions for: se•rol•o•gy Pronunciation: (si-rol'u-jē), [key] — n. the science dealing with the immunological properties and actions of serum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: serology (Thesaurus) serodiagnosis seronegative Related Content Daily Word Quiz: quandary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language