معنی کلمه :‌ hyostylic

The power or act which directs or impels to effort of any kind, whether muscular or psychical. Of conation, in other words, of desire and will. J. S. Mill.

Having the mandible suspended by the hyomandibular, or upper part of the hyoid arch, as in fishes, instead of directly articulated with the skull as in mammals; -- said of the skull.