Epithelium meaning

ĕpə-thēlē-əm
The thin, membranous tissue that lines most of the internal and external surfaces of an animal's body. Epithelium is composed of one or more layers of densely packed cells. In vertebrates, it lines the outer layer of the skin (epidermis), the surface of most body cavities, and the lumen of fluid-filled organs, such as the gut or intestine.
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(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.
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Cellular tissue covering external body surfaces, as the epidermis, or lining internal surfaces, as hollow organs, vessels, etc.: it consists of one or more layers of cells with little intercellular material.
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Membranous tissue composed of one or more layers of cells separated by very little intercellular substance and forming the covering of most internal and external surfaces of the body and its organs.
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Membranous tissue composed of one or more layers of cells separated by very little intercellular substance and forming the covering of most internal and external surfaces of the body and its organs.
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Origin of epithelium

  • New Latin epithēlium epi– Greek thēlē nipple dhē(i)- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Modern Latin epithēlium, from Ancient Greek ἐπί (epi, “on, atop, epi-”) + θηλή (thēlē, “nipple”).

    From Wiktionary