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antivitamin

American  
[an-tee-vahy-tuh-min, an-tahy-, -vit-uh-min] / ˌæn tiˈvaɪ tə mɪn, ˌæn taɪ-, -ˈvɪt ə mɪn /

noun

Biochemistry.
  1. any substance that interferes with the action of a vitamin.


Etymology

Origin of antivitamin

First recorded in 1925–30; anti- + vitamin

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He was intrigued by the action of an antivitamin substance that apparently starved cancer cells, and so impressed was the American Association for the Advancement of Science that Laurence was asked to rewrite his Times story�in suitably abstruse prose�for the association's journal.

From Time Magazine Archive