• synonyms


adjective Anatomy, Zoology.
  1. located behind the orbit or socket of the eye.
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Origin of postorbital

First recorded in 1825–35; post- + orbital
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for postorbital

Historical Examples

  • The postorbital breadth is actually a third more than in fallenda.

    American Weasels

    E. Raymond Hall

  • In some specimens, such as KU 91716, the stripes are discrete and extend from the postorbital region nearly to the vent.

  • Belodon has preorbital vacuities and postorbital vacuities, but the orbit of the eye is never large, as in Pterodactyles.

    Dragons of the Air

    H. G. Seeley

  • In Cynognathus the postorbital is fused with the jugal, and the supratemporal with the squamosal, forming apparently one bone.

  • The postorbital processes of the frontals are totally wanting—there are not even the traces to be seen in Anomalurus.

British Dictionary definitions for postorbital


  1. anatomy situated behind the eye or the eye socket
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

postorbital in Medicine


  1. Situated behind the socket of the eye.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.