Advertisement
Advertisement
myelin sheath
noun
, Anatomy.
- a wrapping of myelin around certain nerve axons, serving as an electrical insulator that speeds nerve impulses to muscles and other effectors.
Discover More
Word History and Origins
Origin of myelin sheath1
First recorded in 1895–1900
Advertisement
Word of the Day
[flab-er-gast ]
Meaning and examplesStart each day with the Word of the Day in your inbox!
By clicking "Sign Up", you are accepting Dictionary.com Terms & Conditions and Privacy Policies.
Advertisement
Advertisement
Advertisement
Browse