axis

axis definition - medical

ax·is (ăkˈsĭs)

noun pl. ax·es (ăkˈsēzˌ)
  1. A real or imaginary straight line about which a body or geometric object rotates or may be conceived to rotate.
  2. A center line to which parts of a structure or body may be referred.
  3. The second cervical vertebra. Also called epistropheus, vertebra dentata.
  4. An artery that divides into many branches at its origin.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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