• synonyms

nerve cord

  1. a single hollow tract of nervous tissue that constitutes the central nervous system of chordates and develops into the spinal cord and brain in vertebrates.
  2. a 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.
Show More

Origin of nerve cord

First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for nerve cord

Historical Examples of nerve cord

  • There is a slight swelling on the nerve-cord in each segment of the body.

    Elementary Zoology, Second Edition

    Vernon L. Kellogg

  • Just beneath the nerve-cord note a blood-vessel extending the length of the body.

  • A streak or groove forms along its axis, and becomes the nerve-cord running along the back.

  • This is an elastic rod of cartilage, lying just beneath the spinal marrow or nerve-cord, which runs backward from the brain.