(nā'zē-ō-in'ē-ak), Relating to the nasion and inion; denoting the distance in a straight line between the frontonasal suture and the external occipital protuberance.
nasioiniac
(nā″zē-ō-ĭn′ē-ăk) [L. nasus, nose, + Gr. inion, back of the head] Pert. to the nasion and inion.