• synonyms


[ noo r-uh-lem-uh, nyoo r- ]
/ ˌnʊər əˈlɛm ə, ˌnyʊər- /

noun Anatomy.

the delicate outermost membrane of the myelin sheath of a myelinated nerve cell.

Nearby words

neurectasis, neurectomy, neurectopia, neurergic, neurexeresis, neurilemma, neurilemma cell, neurilemoma, neurimotor, neurinoma, neuristor

Origin of neurilemma

1815–25; alteration of French névrilème (< Greek neur- neur- + eílēma covering), by association with lemma2
Related formsneu·ri·lem·mal, neu·ri·lem·mat·ic [noo r-uh-luh-mat-ik, nyoo r-] /ˌnʊər ə ləˈmæt ɪk, ˌnyʊər-/, neu·ri·lem·ma·tous, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for neurilemma

  • The deeply stained oblong nuclei indicate the nerve corpuscles within the neurilemma.

    A Practical Physiology|Albert F. Blaisdell
  • The outer sheath (neurilemma) is also continuous throughout the length of the fibers.

    A Practical Physiology|Albert F. Blaisdell
  • Neurilemma, nū-ri-lem′a, n. the external sheath of a nerve-fibre.

  • The whole is enclosed in a thin, delicate sheath, known as neurilemma.

    A Practical Physiology|Albert F. Blaisdell

British Dictionary definitions for neurilemma


/ (ˌnjʊərɪˈlɛmə) /


a variant of neurolemma

Word Origin for neurilemma

C19: from French névrilème, from Greek neuron nerve + eilēma covering, but influenced also by Greek lemma husk
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for neurilemma



The delicate membranous covering that forms the myelin sheath around the axons of peripheral nerves.sheath of Schwann
Schwann cell
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.