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orbital opening

 

Definition: the somewhat quadrangular anterior entrance to the orbit that forms the base of the pyramidal orbital cavity. It is bounded by the sharp supraorbital, infraorbital, and lateral orbital margins and a less obvious medial margin on each side of the upper nose.

Synonym(s): aditus orbitalisTA, aperture of orbit

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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