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n. pl. ep·i·the·li·a (-lē-ə) or ep·i·the·li·ums
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.

[New Latin epithēlium : epi- + Greek thēlē, nipple; see dhē(i)- in Indo-European roots.]

ep′i·the′li·al adj.


(ˌɛp əˈθi li əl)
of the epithelium.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.epithelial - of or belonging to the epithelium; "epithelial layer"


a. epitelial, rel. al epitelio.
References in periodicals archive ?
One study isolated the epithelially activated mesenchyme, reorganised the cells, recombined the cells with epithelium, and placed the epithelial and mesenchymal cells in a mouse renal capsule [Yamamoto et al.
Some of the bacteriocytes, however, are epithelially organized and contribute to the myoepithelium of the dorsal blood vessel, especially in areas where the vessel is open and blood flows freely between lacunae and blood vessel.
Matrix metalloproteinase-21 is expressed epithelially during development and in cancer and is up-regulated by transforming growth factor-beta1 in keratinocytes.