# node of Ranvier

> English word · Noun · IPA /ˈɹɑn.vi.eɪ/

## Definitions
1. A small constriction in the myelin sheath of axons.

## Etymology
Named for French physician Louis-Antoine Ranvier.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/node-of-ranvier