bas i sphenoid (basisfenoid)

and n. [ II. n. In an at., the centrum of the second cranial segment, or basis, of the compound sphenoid bone, represented in human anatomy by the greater part of the body of the sphenoid (all that part behind the sella turcica), as distinguished from its wings, and pterygoid proce es, situated in the basicranial axis of the skull, between the bas i occipital and the pre sphenoid. It is always combined with other sphebasioccipital. See cuts under Crotal us , Esox , and sphenoid . bas i sphenoidal (bā"si-sfē-noi'dal), a . Same as bas i sphenoid . and frequently ankyloses also with