unmyelinated

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un·my·e·lin·at·ed

 (ŭn-mī′ə-lĭ-nā′tĭd)
adj.
Lacking a myelin sheath. Used of a nerve fiber.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

unmyelinated

(ʌnˈmaɪəlɪˌneɪtɪd)
adj
(of a nerve fibre) not having a myelin sheath
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.unmyelinated - (of neurons) not myelinated
medullated, myelinated - (of neurons) covered with a layer of myelin
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The Sudoscan device assesses amyelinic sympathetic C-fibers which innervate the sweat glands while the MSA thermal stimulator assess myelinated A-delta fibers and unmyelinated C-fibers.
Organisms enter through the olfactory neuroepithelium at the level of the cribriform plate and invade the amyelinic submucosal nervous plexus13.
6), Amyelinic nervous fibers in the neuropile were observed and some changes in the conformation of the myelin cover and altered mitochondria with loss of crests were also detected (FIG.