/ Dictionary / Index S serotherapy: Meaning and Definition of Find definitions for: se•ro•ther•a•py Pronunciation: (sēr"ō-ther'u-pē), [key] — n. Med. therapy by means of injections of a serum obtained esp. from an immune animal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. serositis serotinal Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language