Ophthal´mic, a. Pertaining to the eye. Ophthalmic region is equivalent to orbital region.
Op´tic, a. Pertaining to the eye, or to the sight. The optic nerve issues from the brain and spreads into the retina.
O´ral, a. Pertaining to the mouth.
Orbic´ular, a. Circular.
Or´bit, n. Eye-socket. Also, synonymous with orbita.
Or´bita, n. Circumorbital region taken immediately around the eye-opening. (41.)
Or´bital, a. Pertaining to the orbit.
Orbi´to-sphe´noid, n. Part of the sphenoid bone, forming a portion of the orbit.
Or´der, Or´do, n. In classification, a group pl. ordines, between family and class.
Or´dinal, a. Having the taxonomic rank or value of an order.