perineurium

American  

[per-uh-noor-ee-uhm, -nyoor-] / ˌpɛr əˈnʊər i əm, -ˈnyʊər- /

noun

Anatomy.

plural

perineuria

1. the sheath of connective tissue that encloses a bundle of nerve fibers.

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perineurium British  

/ ˌpɛrɪˈnjʊərɪəm /

noun

1. the connective tissue forming a sheath around a single bundle of nerve fibres

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Other Word Forms

• perineurial adjective
• perineurical adjective

Etymology

Origin of perineurium

From New Latin, dating back to 1835–45; peri-, neur-, -ium

Example Sentences

Within the nerve, axons are further bundled into fascicles, which are each surrounded by their own layer of fibrous connective tissue called perineurium.

From Textbooks • Jun. 19, 2013

Figure 13.22 To what structures in a skeletal muscle are the endoneurium, perineurium, and epineurium comparable?

From Textbooks • Jun. 19, 2013

The tumours, which vary greatly in size and number—as many as a thousand have been counted in one case—are enclosed in a capsule derived from the perineurium.

From Manual of Surgery Volume First: General Surgery. Sixth Edition. by Thomson, Alexis

The nerve fibres there figured are bound together by endoneurium into small ropes, the nerves, encased in perineurium.

From Text Book of Biology, Part 1: Vertebrata by Wells, H. G. (Herbert George)