antivitamin


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antivitamin

 [an″te-, an″ti-vi´tah-min]
a substance that inactivates or inhibits synthesis of a vitamin.

an·ti·vi·ta·min

(an'tē-vī'tă-min),
A substance that prevents a vitamin from exerting its typical biologic effects. Most antivitamins have chemical structures like those of vitamins (for example, pyridoxine and its antivitamin, deoxypyridoxine) and appear to function as competitive antagonists; some antivitamins produce effects, in addition, which are unrelated to vitamin antagonism.

antivitamin

(ăn′tē-vī′tə-mĭn, ăn′tī-)
n.
A substance that destroys or inhibits the metabolic action of a vitamin.

an·ti·vi·ta·min

(an'tē-vī'tă-min)
A substance that prevents a vitamin from exerting its typical biologic effects. Most antivitamins have chemical structures like those of vitamins and appear to function as competitive antagonists.

antivitamin

a substance that inactivates or inhibits the normal functioning of a vitamin.