alisphenoid al·i·sphe·noid (āl'ĭ-sfē'noid, ā'lĭ-)
Relating to the greater wing of the sphenoid bone.
Anteroventrally the sphenoidal fissure is bounded by the orbitosphenoid bone, and dorsolaterally by the alisphenoid bone.
The alisphenoid bone is large and forms part of the posteromedial wall of the orbit.
Each also sends ventralwards a plate which meets an upgrowth from the pterygoid and acts as an alisphenoid.
Dorsally the pterygoid articulates with the basisphenoid, quadrate, and alisphenoid.
Orbit completely separated from the temporal fossa by an inward extension of the frontal and malar bones meeting the alisphenoid.
The alisphenoid is a small bone in the roof of the mouth before the prootic.
The tympanic bone remains permanently distinct, and the anterior boundary of the tympanic cavity is formed by the alisphenoid.
The palatine is well developed, the pterygoid is small and early fuses with the pterygoid process of the alisphenoid.
Dorso-laterally the basisphenoid is joined by the alisphenoid, which forms most of the posterior wall of the orbit.