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adjuvant

/ˈædʒəvənt/
IPA guide

Other forms: adjuvants

An adjuvant is something added to help boost effectiveness or facilitate a process. For example, in a vaccine, certain adjuvants help create a stronger and longer-lasting immune response to an antigen.

In medicine, adjuvants can be anything used to enhance the effectiveness or manageability of treatments, including things like pain medicines, or substances that protect healthy tissue when undergoing chemotherapy treatments. The word adjuvant is also used outside of medicine to name or describe anything or anyone that helps: An adjuvant added to a fungicide doesn't kill a fungus, but it helps the fungicide work better. A good study guide could be an adjuvant in preparing for a big test. Adjuvant comes from the Latin adjuvare, meaning "to help."

Definitions of adjuvant
  1. adjective
    furnishing added support
    “an adjuvant discipline to forms of mysticism”
    supportive
    furnishing support or assistance
  2. noun
    someone or something that aids or assists
  3. adjective
    enhancing the action of a medical treatment
    “the adjuvant action of certain bacteria”
    synonyms:
    helpful
    providing assistance or serving a useful function
  4. noun
    (medicine) a therapy, medicine, or anything that makes a medical treatment more effective or manageable
    see moresee less
    type of:
    additive
    something added to enhance food or gasoline or paint or medicine
  5. noun
    (medicine) a substance added to a vaccine to enhance its effectiveness
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DISCLAIMER: These example sentences appear in various news sources and books to reflect the usage of the word ‘adjuvant'. Views expressed in the examples do not represent the opinion of Vocabulary.com or its editors. Send us feedback
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