Dictionary

epithelium

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

Definition of EPITHELIUM

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

Origin of EPITHELIUM

New Latin, from epi- + Greek thēlē nipple — more at feminine
First Known Use: 1748

epithelium

noun ep·i·the·li·um \ˌep-ə-ˈthē-lē-əm\   (Medical Dictionary)
plural ep·i·the·lia \-lē-ə\

Medical Definition of EPITHELIUM

:  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

May 28, 2015
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