antivitamin

A substance that prevents a vitamin from exerting its typical biological effects. Most antivitamin's have chemical structures similar to vitamins (e.g., pyridoxine and its antivitamin, deoxypyridoxine) and appear to function as competitive antagonists; some antivitamin's produce effects, in addition, that are unrelated to vitamin antagonism. ... (0...
Found on http://www.encyclo.co.uk/local/20973

antivitamin

(an″te-) (an″ti-vi´tә-min) a substance that inactivates or inhibits synthesis of a vitamin.
Found on http://www.encyclo.co.uk/local/21001

antivitamin

(from the article `vitamin`) ...development in an organism of a deficiency either by dietary deprivation of the vitamin or by administration of a specific antagonist or compound ...
Found on http://www.britannica.com/eb/a-z/a/84

antivitamin

Type: Term Pronunciation: an′tē-vī′tă-min Definitions: 1. A substance that prevents a vitamin from exerting its typical biologic effects. Most antivitamins have chemical structures like those of vitamins (pyridoxine and its antivitamin, deoxypyridoxine) and appear to function as competitive antagonists; some antivitamins ...
Found on http://www.medilexicon.com/medicaldictionary.php?t=5161
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