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Definition of Myelin
1. Noun. A white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers.
Exact synonyms: Medulla, Myeline
Substance meronyms: Medullary Sheath, Myelin Sheath
Generic synonyms: Fat
Derivative terms: Myelinic
Substance meronyms: Medullary Sheath, Myelin Sheath
Generic synonyms: Fat
Derivative terms: Myelinic
Definition of Myelin
1. n. A soft white substance constituting the medullary sheaths of nerve fibers, and composed mainly of cholesterin, lecithin, cerebrin, albumin, and some fat.
Definition of Myelin
1. a fatty substance that encases certain nerve fibers [n -S] : MYELINIC [adj]