adjuvant

باللغة العربية: مادة مساعدة، عامل مساعد

1. An additive (often a separate product) that enhances the efficacy of a pesticide, but has little or no pesticidal effect itself. (formal)
2. A substance enhancing the immune response to an antigen. (formal)
3. A form of therapy or treatment which is additional or supplementary to another, or which enhances the effectiveness of another. (formal)

الجمع adjuvants