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English definition of “membrane”

membrane

noun [C or U] uk   /ˈmem.breɪn/ specialized us  
anatomy a thin piece of skin that covers or connects parts of a person's or animal's body: The cornea is the transparent membrane that covers the front of the eye.Substances and structures in the body engineering a very thin piece of material that covers an openingCoverings and layers biology the outer covering of a cell: a cell membraneCells
(Definition of membrane from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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