[an-tee-vahy-tuh-min, an-tahy- or, British, -vit-uh-min]
any substance that interferes with the action of a vitamin.
Origin of antivitamin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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.