Definify.com
Webster 1913 Edition
Epithelium
Epˊi-the′li-um
,Noun.
pl. E.
Epitheliums
(#)
, L. Epithelia
(#)
. [NL., fr. Gr.
ἐπί
upon + [GREEK] nipple.] (Anat.)
The superficial layer of cells lining the alimentary canal and all its appendages, all glands and their ducts, blood vessels and lymphatics, serous cavities, etc. It often includes the epidermis (i. e., keratin-producing epithelial cells), and it is sometimes restricted to the alimentary canal, the glands and their appendages, – the term endothelium being applied to the lining membrane of the blood vessels, lymphatics, and serous cavities.
Definition 2024
epithelium
epithelium
See also: épithélium
English
Noun
epithelium (plural epitheliums or epithelia)
- (anatomy) A membranous tissue composed of one or more layers of cells which forms the covering of most internal and external surfaces of the body and its organs: internally including the lining of vessels and other small cavities, and externally being the skin.
- 1969, Vladimir Nabokov, Ada or Ardor, Penguin 2011, p. 25:
- the passenger's roving eyes paused for a moment as he listened inwardly to a nether itch, which he supposed to be (correctly, thank Log) only a minor irritation of the epithelium.
- 1969, Vladimir Nabokov, Ada or Ardor, Penguin 2011, p. 25:
Synonyms
- epithelial tissue
Derived terms
Translations
membranous tissue
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