from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A constriction in the myelin sheath, occurring at varying intervals along the length of a nerve fiber.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A small constriction in the myelin sheath of axons
After Louis Antoine Ranvier (1835-1922), French histologist.(American Heritage® Dictionary of the English Language, Fourth Edition)
For Louis-Antoine Ranvier French physician (Wiktionary)