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WordReference Random House Unabridged Dictionary of American English © 2024nerve′ cord′, - Anatomya single hollow tract of nervous tissue that constitutes the central nervous system of chordates and develops into the spinal cord and brain in vertebrates.
- Anatomy, Zoology, Invertebratesa solid double strand of nerve fibers along the length of the body in elongate invertebrates, as earthworms and insects, connecting with a pair of nerve ganglia at each body segment.
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