antivitamin

noun

an·​ti·​vi·​ta·​min ˈan-ti-ˌvī-tə-mən  ˈan-tī- 

 British usually  -ˌvi-

: a substance that makes a vitamin metabolically ineffective

Word History

First Known Use

1927, in the meaning defined above

Medical Definition

antivitamin

noun

an·​ti·​vi·​ta·​min

ˈant-i-ˌvīt-ə-mən, ˈan-ˌtī-, British usually -ˌvit-

: a substance that makes a vitamin metabolically ineffective