Definition of postorbital in English:


Line breaks: post|orbit¦al
Pronunciation: /pəʊstˈɔːbɪt(ə)l
chiefly Zoology


  • Situated at the back of the orbit or eye socket, in particular denoting a process of the frontal bone which in some reptiles forms a separate bone.
    More example sentences
    • The postorbital process of the frontal bone is sharp.
    • The skull of a colugo is very distinctive, broad and flat in outline and with a nearly complete postorbital process that sets off the eye sockets.
    • All artiodactyls have a postorbital bar or process.


Back to top  
  • A postorbital bone.
    More example sentences
    • The capitate processes are small and visible through the supratemporal fenestrae dorsally, fitting within fossae in the postorbitals.
    • Lateral processes for the postorbitals are short, and a broad sutural contact with the laterosphenoid occurs within the supratemporal space.
    • Again, there may be individual variation and some exceptions, but the general rule is six bones: three operculars, the squamosal, a postorbital, and any posterior process of the lacrimojugal.

More definitions of postorbital

Definition of postorbital in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
(in science fiction) navigation in outer space