unmyelinated

[ uhn-mahy-uh-luh-ney-tid ]
/ ʌnˈmaɪ ə ləˌneɪ tɪd /

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

Medical definitions for unmyelinated

unmyelinated
[ ŭn-mīə-lĭ-nā′tĭd ]

adj.

Lacking a myelin sheath. Used of a nerve fiber.