Definition of node of Ranvier in English:

node of Ranvier

Line breaks: node of Ran|vier
Pronunciation: /ˈrɑːnvɪəɪ
, ʀɑ̃vje/
(also Ranvier's node)


  • A gap in the myelin sheath of a nerve, between adjacent Schwann cells.
    More 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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a slit made by cutting with a saw