Suberin

ahd-5
  • noun. A waxy waterproof substance present in the cell walls of certain plant tissues, especially cork.
    • The Century Dictionary and Cyclopedia
  • noun. The cellular tissue of cork after the various soluble matters have been removed. It is allied to cellulose. See cork, 2.
    • the GNU version of the Collaborative International Dictionary of English
  • noun. A material found in the cell walls of cork. It is a modification of lignin.
    • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. A waxy material found in the cell walls of cork and similar plants
    • Word Usage
    "One of cork's distinguishing features is its high concentration of a waxy, highly water-repellent substance called suberin, which makes it perfect as a stopper for liquids such as wine."
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