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Entry 1 sense Webster, 1913

Medullin

· Me·dul·lin · IPA
01 n. A variety of lignin or cellulose found in the medulla, or pith, of certain plants. Cf. Lignin, and Cellulose.
  1. 1.
    A variety of lignin or cellulose found in the medulla, or pith, of certain plants. Cf. Lignin, and Cellulose.(Bot. Chem.) See: Lignin, Cellulose