Definition of "neurilemma" [‖Neu•ri•lem•ma]

• Any of the cells having a membrane that composes a sheath around the axons of peripheral nerves. Also called Schwann cell. (noun)
• The sheath formed by such a cell. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The Schwann's cells finally form a thin membrane called the neurilemma (nyoo'rih-lem'uh; "nerve-skin" G), which still contains the nuclei of the original Schwann's cells."
• "Where the neurilemma has been destroyed or where the axon is one lacking a neurilemma (as many are) regeneration is impossible."
• "An axon which has degenerated through injury or disease can sometimes be regenerated, provided its neurilemma has remained intact."