adjuvant
UK /ˈæd͡ʒʊv(ə)nt/ · US /ˈæd͡ʒəv(ə)nt/ adjective, noun
Forms adjuvants
- adjective (formal) Providing assistance or help; assistive, facilitative, helpful.
- adjective (immunology) Enhancing the immune response to an antigen; also, containing a substance having such an effect.
- adjective (medicine) Of a form of therapy or treatment: additional, supplementary; specifically (oncology), of a cancer treatment: given after removal of a primary tumour.
- noun (agriculture) An additive (often a separate product) that enhances the efficacy of a pesticide, but has little or no pesticidal effect itself.
- noun (immunology) A substance enhancing the immune response to an antigen.
- noun (medicine) A form of therapy or treatment which is additional or supplementary to another, or which enhances the effectiveness of another.
- noun (pharmacology, archaic) An additive which aids or modifies the action of the principal ingredient of a drug.
Synonyms
assisting auxiliary complementary contributory helping supporting accessory attendant adjunct ancillary appurtenant
Etymology
Learned borrowing from Latin adiuvant-, adjuvant- + English -ant (suffix forming adjectives with the sense ‘exhibiting a condition or process’; and forming agent nouns). Adiuvant-, adjuvant- are oblique stems of adiuvāns, adjuvāns (“assisting, helping”), the present active participle of adiuvō (“to assist, help; to be useful; etc.”), from ad- (“prefix meaning ‘to; toward’”) + iuvō (“to aid, help; to save”) (possibly from Proto-Indo-European *h₁ewH- (“to assist, help; to save”)).
Adjective sense 3 (“of a form of therapy or treatment: additional, supplementary”) and noun sense 1.4 (“additive which aids or modifies the action of the principal ingredient of a drug”) are possibly derived from French adjuvant (adjective, noun).
Webster’s 1913
- adjective Helping; helpful; assisting. [R.] "Adjuvant causes." Howell.
- noun An assistant. [R.] Yelverton.
- noun An ingredient, in a prescription, which aids or modifies the action of the principal ingredient.
Etymology [L. adjuvans, p. pr. of adjuvare to aid: cf. F. adjuvant. See Aid.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “adjuvant”, CC BY-SA 4.0. Details