·adj Helping; helpful; assisting.
II. Adjuvant ·noun An Assistant.
III. Adjuvant ·noun A substance added to an immunogenic agent to enhance the production of antibodies.
IV. Adjuvant ·noun A substance added to a formulation of a drug which enhances the effect of the active ingredient.
V. Adjuvant ·noun An ingredient, in a prescription, which aids or modifies the action of the principal ingredient.