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单词 carotin
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WordReference Random House Unabridged Dictionary of American English © 2024
car•o•tin  (kar′ə tin),USA pronunciation n. 
  1. Biochemistrycarotene.

WordReference Random House Unabridged Dictionary of American English © 2024
car•o•tene  (kar′ə tēn′),USA pronunciation n. 
  1. Biochemistry, Nutritionany of three yellow or orange fat-soluble pigments having the formula C40H56, found in many plants, esp. carrots, and transformed to vitamin A in the liver;
    provitamin A.
Also, carotin. 
  • Late Latin carōt(a) carrot + -ene
  • 1860–65

Collins Concise English Dictionary © HarperCollins Publishers::
carotene /ˈkærəˌtiːn/, carotin /ˈkærətɪn/ n
  1. 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
Etymology: 19th Century carotin, from Latin carōta carrot; see -ene
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更新时间：2025/7/23 1:54:07