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单词 menadione
释义

WordReference Random House Unabridged Dictionary of American English © 2024
men•a•di•one  (men′ə dīōn),USA pronunciation n. [Pharm.]
  1. Biochemistry, Drugsa synthetic yellow crystalline powder, C11H8O2, insoluble in water, used as a vitamin K supplement. Also called vitamin K3. 
  • me(thyl) + na(phthalene) + di-1 + -one 1940–45

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