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node of Ranvier Syllabification: node of Ran·vier
Pronunciation: /ˌnōd əv ˈränvyā/
(also Ranvier's node)

Definition of node of Ranvier in English:


A gap in the myelin sheath of a nerve, between adjacent Schwann cells.
Example sentences
  • Mammalian vertebrates may also have the morphological equivalent of the septate junction where Schwann cells link to nerve axons at the node of Ranvier.
  • The myelin sheath around an axon is interrupted at regular intervals known as the nodes of Ranvier.
  • Another node of Ranvier more clearly shows the dark axon as it continues through the node.


Late 19th century: named after Louis Antoine Ranvier (1835–1922), French histologist.

Definition of node of Ranvier in:

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