Word Study
myelin
WORDNET DICTIONARY
Noun myelin has 1 sense
- myelin(n = noun.substance) medulla, myeline - a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers; Array is a kind of fat
Derived form adjective myelinic1
CIDE DICTIONARY
myelin, n. [Gr. myelo`s marrow.].
A soft white substance constituting the medullary sheaths of nerve fibers, and composed mainly of cholesterin, lecithin, cerebrin, protein, and some fat. [1913 Webster]
OXFORD DICTIONARY
myelin, n. a white substance which forms a sheath around certain nerve-fibres.
Derivative
myelination n.
Etymology
Gk muelos marrow + -IN
For further exploring for "myelin" in Webster Dictionary Online