Dictionary

endothelium

noun en·do·the·li·um \ˌen-də-ˈthē-lē-əm\
plural en·do·the·lia\-lē-ə\

Definition of ENDOTHELIUM

1
:  an epithelium of mesodermal origin composed of a single layer of thin flattened cells that lines internal body cavities and the lumens of vessels
2
:  the inner layer of the seed coat of some plants
en·do·the·li·al \-lē-əl\ adjective
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Origin of ENDOTHELIUM

New Latin, from end- + -thelium (as in epithelium)
First Known Use: 1872
Medical Dictionary

endothelium

noun en·do·the·li·um \ˌen-də-ˈthē-lē-əm\
plural en·do·the·lia \-lē-ə\

Medical Definition of ENDOTHELIUM

:  an epithelium of mesoblastic origin composed of a single layer of thin flattened cells that lines internal body cavities (as the serous cavities or the interior of the heart)

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