1. A treatment that enhances an existing medical regimen, as a pharmacological agent added to a drug to increase or aid its effect.
2. An immunological agent that increases the antigenic response.
1. Contributing to or enhancing an existing medical regimen: adjuvant chemotherapy.
2. or ad·ju·vant·ed (ăjə-vən-tĭd) Containing an adjuvant: an adjuvant vaccine.
[From Latin adiuvāns, adiuvant-, present participle of adiuvāre, to help; see AID.]
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