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单词 lignin
释义

WordReference Random House Unabridged Dictionary of American English © 2024
lig•nin  (lignin),USA pronunciation n. 
  1. Botanyan organic substance that, with cellulose, forms the chief part of woody tissue.
  2. [Papermaking.]impure matter found in wood pulp.
  • lign- + -in2 1815–25

Collins Concise English Dictionary © HarperCollins Publishers::
lignin /ˈlɪɡnɪn/ n
  1. a complex polymer occurring in certain plant cell walls making the plant rigid
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