The Collaborative International Dictionary of English v.0.48:

Nasoturbinal \Na`so*tur"bi*nal\, a. [Naso- + turbinal.] (Anat.)
   Connected with, or near, both the turbinal and the nasal
   bones; as, the nasoturbinal bone, made up of the uppermost
   lammelae of the ethmoturbinal, and sometimes united with the
   nasal. -- n. The nasoturbinal bone.
   [1913 Webster]