Definitions
from The Century Dictionary.
- noun The middle of the posterior boundary of the foramen magnum of the skull, opposite the basion. See
craniometry .
from the GNU version of the Collaborative International Dictionary of English.
- noun (Anat.) The middle of the posterior, or dorsal, margin of the great foramen of the skull.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun anatomy The middle of the
posterior , ordorsal ,margin of the greatforamen of theskull .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
New Latin, from Ancient Greek.
Support
Help support Wordnik (and make this page ad-free) by adopting the word opisthion.
Examples
-
(bregma-glabella-inion); the lambda angle (lambda-inion-glabella); the opisthion angle (glabella-inion - opisthion; the opisthion is the posterior border of the occipital foramen).
The Catholic Encyclopedia, Volume 12: Philip II-Reuss 1840-1916 1913
-
The occipitofrontal or longitudinal arc is measured from the nasion over the middle line of the vertex to the opisthion: while the basinasal length is the distance between the basion and the nasion.
-
The mid-points on the anterior and posterior margins of the foramen magnum are respectively termed the basion and the opisthion.
Comments
Log in or sign up to get involved in the conversation. It's quick and easy.