myelin Meaning, Definition & Usage
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noun a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers
myeline; medulla.
WordNet
My"e*lin noun
Etymology
Gr. marrow.Definitions
(Physiol. Chem.) (a) A soft white substance constituting the medullary sheats of nerve fibers, and composed mainly of cholesterin, lecithin, cerebrin, albumin, and some fat. (b) One of a group of phosphorized principles occurring in nerve tissue, both in the brain and nerve fibers.
