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unmyelinated

[uhn-mahy-uh-luh-ney-tid] /ʌnˈmaɪ ə ləˌneɪ tɪd/
adjective, Anatomy
1.
pertaining to nerve fibers that are not covered with a myelin sheath.
Origin
1915-1920
1915-20; un-1 + myelinated
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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un myelinated in Medicine

unmyelinated un·my·e·lin·at·ed (ŭn-mī'ə-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.
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