• Webster's Revised Unabridged Dictionary
    • a Alisphenoid (Anat) Pertaining to or forming the wing of the sphenoid; relating to a bone in the base of the skull, which in the adult is often consolidated with the sphenoid; as, alisphenoid bone; alisphenoid canal.
    • n Alisphenoid (Anat) The alisphenoid bone.
    • ***
Century Dictionary and Cyclopedia
    • alisphenoid Of or pertaining to the greater wing of the sphenoid bone.
    • n alisphenoid One of the bones of the skull, forming by fusion with other cranial bones, in adult life, a great part of the compound sphenoid bone. In man the alisphenoid is the greater wing of the sphenoid, minus the so-called internal pterygoid process. See cuts under Crocodilia and skull.
    • n alisphenoid In ichthyology, a small lateral bone of the cranium. It articulates above with the sphenotic and an inner descending wing of the frontal, and behind with the proötic. It usually forms a part of the lateral border of the anterior opening of the brain-case, though sometimes it nearly closes this by bending inward and meeting its opposite fellow in a median suture. The ‘alisphenoid’ of Owen is the ‘proötic’ of Parker.
    • ***


Webster's Revised Unabridged Dictionary
L. ala, wing + E. sphenoid,


In literature:

An alisphenoid is lacking on the lower aspect of the skull.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4" by Various
There is a distinct alisphenoid canal for the passage of the internal maxillary artery.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 6" by Various
When it is present it is sometimes formed from other bones, as, for instance, from the alisphenoids.
"The Cambridge Natural History, Vol X., Mammalia" by Frank Evers Beddard
In front of the basioccipital is the basisphenoid with an alisphenoid on each side.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 3" by Various