MYELIN SHEATH as NOUN

1. Meaning
   • a layer of myelin encasing (and insulating) the axons of medullated nerve fibers
   Synonym(s)
   • medullary sheath (what does medullary sheath mean?)
   Hypernyms(s) myelin sheath is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
   • sheath (what does sheath mean?)
   • case (what does case mean?)