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Meaning of node of Ranvier

node' of Ran•vier'

Pronunciation: (rän-vyā', rän'vyā), [key]
— Cell Biol. Cell Biol.
  1. a gap occurring at regular intervals between segments of myelin sheath along a nerve axon.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.