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epithelium

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noun ep·i·the·li·um \ˌe-pə-ˈthē-lē-əm\

Definition of epithelium

plural ep·i·the·liaplay \-lē-ə\

  1. 1 :  a membranous cellular tissue that covers a free surface or lines a tube or cavity of an animal body and serves especially to enclose and protect the other parts of the body, to produce secretions and excretions, and to function in assimilation

  2. 2 :  a usually thin layer of parenchyma that lines a cavity or tube of a plant



Origin of epithelium

New Latin, from epi- + Greek thēlē nipple — more at feminine


First Known Use: 1748


Medical Dictionary

epithelium

play
noun ep·i·the·li·um \ˌep-ə-ˈthē-lē-əm\

Medical Definition of epithelium

plural ep·i·the·lia \-lē-ə\play

  1. :  a membranous cellular tissue that covers a free surface or lines a tube or cavity of an animal body and serves especially to enclose and protect the other parts of the body, to produce secretions and excretions, and to function in assimilation



Illustration of epithelium


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