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epithelium Line breaks: epi|the¦lium
Pronunciation: /ˌɛpɪˈθiːlɪəm/

Definition of epithelium in English:

noun (plural epithelia ˌɛpɪˈθiːlɪə)

[mass noun] Anatomy
1The thin tissue forming the outer layer of a body’s surface and lining the alimentary canal and other hollow structures.
Example sentences
  • Eighty-five percent of human ovarian tumors arise from the epithelium or surface layer of tissue that surrounds the ovaries.
  • Each tonsil has an irregular number of ingrowths of the surface epithelium known as tonsillar crypts.
  • The lining epithelium was often eroded, and the underlying stroma showed dense infiltration by inflammatory cells.
1.1The part of the epithelium derived from embryonic ectoderm and endoderm, as distinct from endothelium and mesothelium.


Mid 18th century: modern Latin, from epi- 'above' + Greek thēlē 'teat'.

Words that rhyme with epithelium

berkelium, helium, nobelium, Sealyham

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