: situated behind the eye socket

Word History

First Known Use

circa 1836, in the meaning defined above

Time Traveler
The first known use of postorbital was circa 1836

Cite this Entry

“Postorbital.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/postorbital. Accessed 8 Jul. 2026.

Medical Definition

postorbital

adjective
: situated or occurring behind the orbit of the eye
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster