Definitions
1.AdjectiveProviding assistance or help; assistive, facilitative, helpful. .mw-parser-output .defdate{font-size:smaller}
2.AdjectiveEnhancing the immune response to an antigen; also, containing a substance having such an effect.
3.AdjectiveOf a form of therapy or treatment: additional, supplementary; specifically , of a cancer treatment: given after removal of a primary tumour.
4.NounSomeone or (more commonly) something that assists, facilitates, or helps; an aid, an assistant, a helper.
5.NounAn additive (often a separate product) that enhances the efficacy of a pesticide, but has little or no pesticidal effect itself.
6.NounA substance enhancing the immune response to an antigen.
7.NounA form of therapy or treatment which is additional or supplementary to another, or which enhances the effectiveness of another.
8.NounAn additive which aids or modifies the action of the principal ingredient of a drug.