adjuvant

Noun
  1. An additive that enhances the effectiveness of medical treatment (synset 102683801)
Adjective
  1. Furnishing added support (synset 302363453)
    "an ancillary pump"; "an adjuvant discipline to forms of mysticism"; "The mind and emotions are auxiliary to each other"
  2. Enhancing the action of a medical treatment (synset 301199641)
    "the adjuvant action of certain bacteria"

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