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decussation

[dee-kuh-sey-shuh n, dek-uh-]
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noun
  1. a process of becoming or condition of being crossed in the form of an X.
  2. Anatomy. a nerve or tract of nerve fibers that crosses from one side of the central nervous system to the other.

Origin of decussation

First recorded in 1650–60; decussate + -ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for decussation

Historical Examples

  • This arrangement is termed the decussation of the anterior columns of the medulla.

    A Treatise on Physiology and Hygiene

    Joseph Chrisman Hutchison

  • The most anterior is the pyramid or motor tract, the decussation of which has been seen.

  • Physicians are not without the use of this decussation in several operations, in ligatures and union of dissolved continuities.


decussation in Medicine

decussation

(dĕk′ə-sāshən, dē′kə-)
n.
  1. A crossing in the shape of an X.
  2. An X-shaped crossing, especially of homonymous nerves or bands of nerve fibers, connecting corresponding parts on opposite sides of the brain or spinal cord.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.