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Meaning of endothelium

en•do•the•li•um

Pronunciation: (en"dō-thē'lē-um), [key]
— pl. -li•a
  1. a type of epithelium composed of a single layer of smooth, thin cells that lines the heart, blood vessels, lymphatics, and serous cavities.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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