/ Dictionary / Index F Freund's adjuvant: Meaning and Definition of Find definitions for: Freund's' ad'juvant Pronunciation: (froindz), [key] — Immunol. Immunol. a water-in-oil emulsion injected with immunogen or with immunogen and killed mycobacteria to enhance the immune response to the immunogen. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Freudian slip Frey Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language