WordReference Random House Unabridged Dictionary of American English © 2025
en•do•the•li•um
(en′dō thē′lē əm),USA pronunciation n., pl. -li•a
en′do•the′li•al, adj.
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(-lē ə).USA pronunciation
- Anatomya type of epithelium composed of a single layer of smooth, thin cells that lines the heart, blood vessels, lymphatics, and serous cavities.
- 1870–75; endo- + Neo-Latin -thelium; compare epithelium
'endothelium' also found in these entries (note: many are not synonyms or translations):