单词 | carotene |
释义 | Word Frequency carotene(ˈkærəˌtiːn) or carotin (ˈkærətɪn) noun any of four orange-red isomers of an unsaturated hydrocarbon present in many plants (β-carotene is the orange pigment of carrots) and converted to vitamin A in the liver. Formula: C40H56 Word origin C19 carotin, from Latin carōta carrot; see -ene |
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