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preganglionic motor neuron

n.
  1. A motor neuron having a cell body located in the brain or spinal cord and a myelinated axon that travels out of the central nervous system as part of a cranial or spinal nerve before separating and extending into the autonomic ganglion.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.