1) Craniometric point 2) Facial feature 
The nasion (nā′zē än′) is the intersection of the frontal bone and two nasal bones of the human skull. Its manifestation on the visible surface of the face is a distinctly depressed area directly between the eyes, just superior to the bridge of the nose. It is a cephalometric landmark that is just inferior to the glabella. ...
• (n.) The middle point of the nasofrontal suture. • (n.) The middle point of the nasofrontal suture.
(na´ze-on) the middle point of the junction of the frontal and the two nasal bones (frontonasal suture).
Na·si·on noun [ New Latin , from Latin nasus nose.] (Anat.) The middle point of the nasofrontal suture. 
Type: Term Pronunciation: nā′zē-on Definitions: 1. A point on the cranium corresponding to the middle of the nasofrontal suture. Synonyms: nasal point
[n] - the craniometric point at the bridge of the nose where the frontal and nasal bones of the skull meet
noun the craniometric point at the bridge of the nose where the frontal and nasal bones of the skull meet
the intersection of the internasal suture with the nasofrontal suture in the midsagittal plane.