Definition from Wiktionary, the free dictionary
- (neuroanatomy) A white, fatty material, composed of lipids and lipoproteins, that surrounds the axons of nerves.
white, fatty material, composed of lipids and lipoproteins
- myelin in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
- myelin in The Century Dictionary, The Century Co., New York, 1911