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单词 lactone
释义

WordReference Random House Unabridged Dictionary of American English © 2024
lac•tone  (laktōn),USA pronunciation n. [Chem.]
  1. Chemistryany of a group of internal esters derived from hydroxy acids.
  • 1840–50; lact- + -one
lac•ton•ic  (lak tonik),USA pronunciation adj. 
Collins Concise English Dictionary © HarperCollins Publishers::
lactone /ˈlæktəʊn/ n
  1. any of a class of organic compounds formed from hydroxy acids and containing the group -C(CO)OC-, where the carbon atoms are part of a ring

lactonic /lækˈtɒnɪk/ adj
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