Adjuvant

1. n. A substance added to a formulation of a drug which enhances the effect of the active ingredient.
2. n. A substance added to an immunogenic agent to enhance the production of antibodies.
3. n. An assistant.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.