Dictionary

antivitamin

noun an·ti·vi·ta·min \ˈan-ti-ˌvī-tə-mən, British usually -ˌvi-\

Definition of ANTIVITAMIN

:  a substance that makes a vitamin metabolically ineffective

First Known Use of ANTIVITAMIN

1927

antivitamin

noun an·ti·vi·ta·min \ˈant-i-ˌvīt-ə-mən, ˈan-ˌtī-, British usually -ˌvit-\   (Medical Dictionary)

Medical Definition of ANTIVITAMIN

:  a substance that makes a vitamin metabolically ineffective

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