demyelination

noun
de·​my·​eli·​na·​tion | \ (ˌ)dē-ˌmī-ə-lə-ˈnā-shən How to pronounce demyelination (audio) \

Medical Definition of demyelination

: the state resulting from the loss or destruction of myelin also : the process of such loss or destruction

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to wander slowly or to speak indistinctly

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