antivitamin

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

noun Biochemistry.

any substance that interferes with the action of a vitamin.

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Origin of antivitamin

First recorded in 1925–30; anti- + vitamin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for antivitamin

antivitamin
[ ăn′tē-vītə-mĭn, ăn′tī- ]

n.

A substance that prevents a vitamin from exerting its typical metabolic effects.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.