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Entry 1 sense Webster, 1913

vitamin B1

· IPA
01 n. a B vitamin (C12H17N4OS)Cl that prevents beriberi and maintains appetite and growth. Same as thiamine.
  1. 1.
    a B vitamin (C12H17N4OS)Cl that prevents beriberi and maintains appetite and growth. Same as thiamine. See: thiamine
Syn. thiamin, aneurin, antiberiberi factor.