internodePronunciation: /ˈɪntənəʊd/Definition of internode noun a slender part between two nodes or joints, in particular: Botany a part of a plant stem between two of the nodes from which leaves emerge. Anatomy a stretch of a nerve cell axon sheathed in myelin, between two nodes of Ranvier. Origin: mid 17th century: from Latin internodium, from inter- 'between' + nodus 'knot'internode in other Oxford dictionaries Definition of internode in the US English dictionary