Medical Dictionary


noun my·e·lin \ˈmī-ə-lən\

Medical Definition of MYELIN

:  a soft white material of lipid and protein that is secreted by oligodendrocytes and Schwann cells and forms a thick sheath about axons—see myelin sheath
my·e·lin·ic \ˌmī-ə-ˈlin-ik\ adjective
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