Definition of membrane noun from the Oxford Advanced Learner's Dictionary

     

    membrane

     noun
    noun
    BrE BrE//ˈmembreɪn//
     
    ; NAmE NAmE//ˈmembreɪn//
     
    [countable, uncountable] Cell biology
     
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  1. 1 a thin layer of skin or tissue that connects or covers parts inside the body The virus passes through the cell membrane. see also mucous membrane
  2. 2 a very thin layer found in the structure of cells in plants See related entries: Cell biology
  3. 3a thin layer of material used to prevent air, liquid, etc. from entering a particular part of something a waterproof membrane
  4. Word Origin late Middle English: from Latin membrana, from membrum ‘limb’.
See the Oxford Advanced American Dictionary entry: membrane

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