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myelin

[ mahy-uh-lin ]
/ ˈmaɪ ə lɪn /
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noun Biology.
a soft, white, fatty material in the membrane of Schwann cells and certain neuroglial cells: the substance of the myelin sheath.
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Also my·e·line [mahy-uh-leen]. /ˈmaɪ əˌlin/.

Origin of myelin

First recorded in 1865–70; myel- + -in2

OTHER WORDS FROM myelin

my·e·lin·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use myelin in a sentence

British Dictionary definitions for myelin

myelin

myeline (ˈmaɪɪˌliːn)

/ (ˈmaɪɪlɪn) /

noun
a white tissue forming an insulating sheath (myelin sheath) around certain nerve fibres. Damage to the myelin sheath causes neurological disease, as in multiple sclerosis

Derived forms of myelin

myelinic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for myelin

myelin
[ mīə-lĭn ]

A whitish, fatty substance that forms a sheath around many vertebrate nerve fibers. Myelin insulates the nerves and permits the rapid transmission of nerve impulses. The white matter of the brain is composed of nerve fibers covered in myelin.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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