epithelium

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

Definition of epithelium

plural epithelia play \ˌe-pə-ˈthē-lē-ə\
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 : a usually thin layer of parenchyma that lines a cavity or tube of a plant

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Origin and Etymology of epithelium

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


Medical Dictionary

epithelium

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

medical Definition of epithelium

plural epithelia play \-lē-ə\
: 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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