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单词 nicotinamide
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WordReference Random House Unabridged Dictionary of American English © 2024
nic•o•tin•a•mide  (nik′ə tin′ə mīd′, -mid, -tē′nə-),USA pronunciation n. [Biochem.]
  1. Biochemistrya colorless, crystalline, water-soluble solid, C6H6N2O, the amide of nicotinic acid, and a component of the vitamin-B complex, found in meat, liver, fish, whole wheat, and eggs: used in medicine chiefly as an agent for preventing or treating human pellagra or animal black tongue. Also called niacinamide, nicotin′ic ac′id am′ide. 
  • nicotine + amide 1890–95

Collins Concise English Dictionary © HarperCollins Publishers::
nicotinamide /ˌnɪkəˈtɪnəˌmaɪd -ˈtiːn-/ n
  1. the amide of nicotinic acid: a component of the vitamin B complex and essential in the diet for the prevention of pellagra. Formula: C6H6ON2
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