Mid 19th century; earliest use found in Richard Owen (1804–1892), comparative anatomist and palaeontologist. From ali- + sphenoidal, after alisphenoid.
Definition of alisphenoidal in US English:
alisphenoidal
adjectiveˌalɪsfɪˈnɔɪdl
Anatomy Zoology
Alisphenoid.
Origin
Mid 19th century; earliest use found in Richard Owen (1804–1892), comparative anatomist and palaeontologist. From ali- + sphenoidal, after alisphenoid.