adjuvant -- (an additive that enhances the effectiveness of medical treatment)
Overview of adj adjuvant
The adj adjuvant has 2 senses
accessory, adjunct, ancillary, adjuvant, appurtenant, auxiliary -- (furnishing added support; "an ancillary pump"; "an adjuvant discipline to forms of mysticism"; "The mind and emotions are auxiliary to each other")
adjuvant -- (enhancing the action of a medical treatment; "the adjuvant action of certain bacteria")