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[pohst-ak-see-uh l] /poʊstˈæk si əl/
adjective, Anatomy, Zoology
pertaining to or situated behind the axis of the body, especially the posterior side of the axis of a limb.
Origin of postaxial
1870-75; post- + axial
Related forms
postaxially, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for postaxial


adjective (anatomy)
situated or occurring behind the axis of the body
of or relating to the posterior part of a vertebrate limb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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postaxial in Medicine

postaxial post·ax·i·al (pōst-āk'sē-əl)

  1. Posterior to the axis of the body or to the axis of a limb in the anatomical position.

  2. Of or being the portion of a limb bud lying caudal to the axis of the limb.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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