WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / M / medullary sheath medullary sheath noun /mɛdəlɛriʃiθ/ 4 syllables 16 letters Scrabble 27 WWF 28 Definitions noun a layer of myelin encasing (and insulating) the axons of medullated nerve fibers myelin sheath Look “medullary sheath” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →