unmyelinated

[uhn-mahy-uh-luh-ney-tid]

adjective Anatomy.

pertaining to nerve fibers that are not covered with a myelin sheath.

Origin of unmyelinated

First recorded in 1915–20; un-1 + myelinated
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

unmyelinated in Medicine

unmyelinated

[ŭn-mīə-lĭ-nā′tĭd]

adj.

Lacking a myelin sheath. Used of a nerve fiber.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.