EPITHELIUM
epithelium, epithelial tissue
(noun) membranous tissue covering internal organs and other internal surfaces of the body
Source: WordNet® 3.1
Etymology
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.
Synonym: epithelial tissue
Source: Wiktionary
Ep`i*the"li*um, n.; pl. E. Epitheliums, L. Epithelia. Etym: [NL., fr. Gr. (Anat.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition
Word of the Day
16 November 2024
LEAVE
(verb) go and leave behind, either intentionally or by neglect or forgetfulness; “She left a mess when she moved out”; “His good luck finally left him”; “her husband left her after 20 years of marriage”; “she wept thinking she had been left behind”
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