Definition of node of Ranvier in English:

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node of Ranvier

Pronunciation: /ˈrɑːnvɪəɪ/
(also Ranvier's node)


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.

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