freund’s adjuvant

noun Immunology.

1. a water-in-oil emulsion injected with immunogen (Freund’s incomplete adjuvant) or with immunogen and killed mycobacteria (Freund’s complete adjuvant) to enhance the immune response to the immunogen.

n.

1. A substance consisting of killed microorganisms, such as mycobacteria, in an oil and water emulsion that is administered to induce and enhance the formation of antibodies.