a type of epithelium composed of a single layer of smooth, thin cells that lines the heart, blood vessels, lymphatics, and serous cavities.
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- en·do·the·li·al, adjective
- sub·en·do·the·li·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use endothelium in a sentence
Changes were found in the endothelium of the blood vessels, the axis cylinders of nerves, and the muscles.
Endotheliomas take origin from the endothelium of lymph vessels and blood vessels, and serous cavities.
The endothelium over these plates often disappears, leaving them exposed to the blood-stream.
Such a cavity is not a mere hole, but has a distinct wall of connective tissue lined with epithelium or endothelium.
The iris becomes attached to the pectinate ligament and to the endothelium of Descemet's membrane.Glaucoma | Various
British Dictionary definitions for endothelium
a tissue consisting of a single layer of cells that lines the blood and lymph vessels, heart, and some other cavities
- endothelial, adjective
- endothelioid, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for endothelium
A thin layer of flat epithelial cells that lines the lymph vessels, blood vessels, and the inner cavities of the heart. Compare mesothelium.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.