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Noun: provitamin  prow'vI-tu-min [N. Amer], prow'vi-tu-min [Brit]
  1. Vitamin precursor; a substance that is converted into a vitamin in animal tissues
    "Beta-carotene is a provitamin that the body can convert to vitamin A"

Derived forms: provitamins

Type of: hydrocarbon

Encyclopedia: Provitamin