myelin Definition in the Cambridge English Dictionary
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Definition of “myelin” - English Dictionary

Definition of "myelin" - British English Dictionary

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myelinnoun [U]

uk   us   /ˈmaɪə.lɪn/ specialized
a ​substancecontaining a lot of ​fat that ​forms a ​covering around ​nerves, ​especially those in the ​brain, ​protecting them and ​helping them to ​sendsignalseffectively: The myelin sheath around the ​neuron is ​damaged.
(Definition of myelin from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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