Connective tissue that covers a bundle of nerve fibers

Wikipedia Word definitions in Wikipedia
In the peripheral nervous system , the myelin sheath of each axon in a nerve is wrapped in a delicate protective sheath known as the endoneurium . Within the nerve, axons targeting the same anatomical location bundled together into groups known as fascicles ...

WordNet Word definitions in WordNet
n. connective tissue that covers a bundle of nerve fibers

Wiktionary Word definitions in Wiktionary
n. (context anatomy English) The sheath of connective tissue that surrounds a fascicle of nerve fibres

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Perineurium \Per`i*neu"ri*um\, n. [NL., fr. Gr. ? about + ? a nerve.] (Anat.) The connective tissue sheath which surrounds a bundle of nerve fibers. See Epineurium , and Neurilemma .