unmyelinated

adjective

un·​my·​elin·​at·​ed ˌən-ˈmī-ə-lə-ˌnā-təd How to pronounce unmyelinated (audio)
: lacking a myelin sheath
unmyelinated axons

Examples of unmyelinated in a Sentence

Recent Examples on the Web Gray matter consists largely of unmyelinated structures such as neuron cell bodies, dendrites (antennalike projections from the cells that receive information from other neurons) and certain axons. Jay N. Giedd, Scientific American, 1 May 2016 Myelinated axons transmit signals up to 100 times faster than unmyelinated ones. Jay N. Giedd, Scientific American, 1 May 2016

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'unmyelinated.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1915, in the meaning defined above

Time Traveler
The first known use of unmyelinated was in 1915

Dictionary Entries Near unmyelinated

Cite this Entry

“Unmyelinated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unmyelinated. Accessed 18 Apr. 2024.

Medical Definition

unmyelinated

adjective
un·​my·​elin·​at·​ed -ˈmī-ə-lə-ˌnāt-əd How to pronounce unmyelinated (audio)
: lacking a myelin sheath
unmyelinated axons
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