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 (pĕr′ə-no͝or′ē-əm, -nyo͝or′-)
n. pl. per·i·neu·ri·a (-no͝or′ē-ə, -nyo͝or′-)
The sheath of connective tissue enclosing a bundle of nerve fibers.

[New Latin : peri- + Greek neuron, nerve; see neuron.]

per′i·neu′ri·al adj.


n, pl -neuria (-ˈnjʊərɪə)
(Anatomy) the connective tissue forming a sheath around a single bundle of nerve fibres
[C19: from New Latin, from peri- + Greek neuron nerve]
ˌperiˈneurial adj


(ˌpɛr əˈnʊər i əm, -ˈnyʊər-)

n., pl. -neu•ri•a (-ˈnʊər i ə, -ˈnyʊər-)
the sheath of connective tissue that encloses a bundle of peripheral nerve fibers.
[1835–45; < New Latin; see peri-, neur-, -ium2]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.perineurium - the sheath of connective tissue that covers a bundle of nerve fibers
connective tissue - tissue of mesodermal origin consisting of e.g. collagen fibroblasts and fatty cells; supports organs and fills spaces between them and forms tendons and ligaments
References in periodicals archive ?
Perineuriomas are rare, benign tumours composed of perineuria! cells, but the occurrence of one in the paratesticular region makes this case even more uncommon.