rabdoidal

from The Collaborative International Dictionary of English v.0.48

Rabdoidal \Rab*doid"al\ (r[a^]b*doid"al), a. [Gr. "ra`bdos a rod
   + -oid + -al.] (Anat.)
   See {Sagittal}. [Written also {rhabdoidal}.]
   [1913 Webster]