from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The bony arch in vertebrates that extends along the side or front of the skull beneath the eye socket and that is formed by the zygomatic bone and the zygomatic process of the temporal bone.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An arch formed by the zygomatic process of temporal bone and the temporal process of the zygomatic bone.
from the GNU version of the Collaborative International Dictionary of English
- adj. the arch of bone beneath the orbit, formed in most mammals by the union of the malar, or jugal, with the zygomatic process of the temporal bone. In the lower vertebrates other bones may help to form it, and there may be two arches on each side of the skull, as in some reptiles.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the slender arch formed by the temporal process of the cheekbone that bridges to the zygomatic process of the temporal bone
Sorry, no etymologies found.
The ratios of the breadth of the zygomatic arch (supposing it equal to 100) to the height of the entire face (from the nasion to the gnathion), and to the height of the upper face (from the nasion to the prosthion), give facial indices which are divided by R. Martin into the following groups: (1) Index for the entire face: hypercuryprosopous (to 79.9), curyprosopous (80.0 to 89.9), leptoprosopous (90.0 to 94.9), hyperleptoprosopous (over 95.0).