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单词 lactam
释义

WordReference Random House Unabridged Dictionary of American English © 2024
lac•tam  (lak′tam),USA pronunciation n. [Chem.]
  1. Chemistryany of a group of cyclic amides characterized by the NHCO group, derived from aminocarboxylic acids by the intramolecular elimination of water from the amino and carboxylic groups.
  • lact(one) + am(ide) 1880–85

Collins Concise English Dictionary © HarperCollins Publishers::
lactam /ˈlæktæm/ n
  1. any of a group of inner amides, derived from amino acids, having the characteristic group -CONH-
Etymology: 20th Century: from lact( one) + am( ide)
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更新时间：2024/9/20 5:29:30