provitamin

/proh-vahy-tuh-min; British also proh-vit-uh-min/US // proʊˈvaɪ tə mɪn; British also proʊˈvɪt ə mɪn //UK // (prəʊˈvɪtəmɪn) //

抗生素,抗癌剂,抗癌药,抗过敏药

Definitions

n.名词 noun

1
Biochemistry.
- : a substance that an organism can transform into a vitamin, as carotene, which is converted to vitamin A in the liver.