Definition of adjuvants:
(adj) :
(medicine) Of a form of therapy or treatment: additional, supplementary; specifically (oncology), of a cancer treatment: given after removal of a primary tumour.
(adj) :
(formal) Providing assistance or help; assistive, facilitative, helpful.
(adj) :
(immunology) Enhancing the immune response to an antigen; also, containing a substance having such an effect.
(n) :
(formal) Someone or (more commonly) something that assists, facilitates, or helps; an aid, an assistant, a helper.
(n) :
(immunology) A substance enhancing the immune response to an antigen.
(n) :
(agriculture) An additive (often a separate product) that enhances the efficacy of a pesticide, but has little or no pesticidal effect itself.