endothelium

(en′dō t̸hē′lē əm)

noun pl. endothelia

the layer of cells lining the inside of blood and lymph vessels, of the heart, and of some other closed cavities

Origin: ModL < endo- + (epi)thelium

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See endothelium in American Heritage Dictionary 4

noun pl. en·do·the·li·a (-lē-ə)

A thin layer of flat epithelial cells that lines serous cavities, lymph vessels, and blood vessels.

Origin:

Origin: New Latin endothēlium

Origin: : endo-

Origin: + Greek thēlē, nipple; see dhē(i)- in Indo-European roots

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