Hypertext Webster Gateway: "endothelium"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Endothelium \En`do*the"li*um\, n.; pl. {Endothelia}. [NL., fr.
Gr. 'e`ndon within + ? nipple.] (Anat.)
The thin epithelium lining the blood vessels, lymphatics, and
serous cavities. See {Epithelium}.
From WordNet (r) 1.7 (wn)
endothelium
n : an epithelium of mesoblastic origin; a thin layer of
flattened cells that lines the inside of some body
cavities
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