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my·e·lin(mī′ə-lĭn) also my·e·line (-lĭn, -lēn′)
A white fatty material, composed chiefly of lipids and lipoproteins, that encloses certain axons and nerve fibers. Also called medulla.
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|Noun||1.||myeline - a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers|
medullary sheath, myelin sheath - a layer of myelin encasing (and insulating) the axons of medullated nerve fibers
fat - a soft greasy substance occurring in organic tissue and consisting of a mixture of lipids (mostly triglycerides); "pizza has too much fat"