orb-, orbito-

Concerning the orbit and nasal cavity of the skull; such as, the orbitonasal, or ophthalmic, nerve.

A divice for measuring the ease of displacement of the eye into the orbital tissue, of value in the study of exophthalmos (an abnormally forward, protuberant position of the eye within the orbit; also, protopsis).

1. Conjoined twins in which the smaller fetus is attached to the orbit of the larger fetus.
2. Unequal conjoined twins in which the parasitic member, usually very poorly formed, is attached in the orbital region of the host; also identified as, teratoma orbitae.

A reference to the orbit and the sphenoid bone.

A craniometric instrument used for measuring the orbital axis.

Of or relating to the orbit and the temporal bone region.

1. Surgical incision into the orbit.
2. Any operation creating an opening into the orbit.

1. In astronomy, the path described by a heavenly body in its periodical revolution around another body; such as, the orbit of Jupiter, of the earth, of the moon.
2. An orb or ball. "Roll the lucid orbit of an eye."
3. In anatomy, the cavity or socket of the skull in which the eye and its appendages are situated.
4. In zoology, the skin which surrounds the eye of a bird.

1. Situated around the orbit of the eye.
2. Of, relating to, or characterizing the periorbit.
3. Of, relating to, occurring in, or being the tissues surrounding or lining the orbit of the eye; as with periorbital edema.

1. Situated behind the orbit or socket of the eye; as the postorbital bone.
2. Situated behind the orbit; such as, the postorbital scales of some fishes and reptiles.

1. A reference to a spacecraft: not in orbit; not achieving an altitude and velocity resulting in a ballistic trajectory circling the earth at least once.
2. Having or following a trajectory of less than one orbit; as a rocket or spacecraft.
3. In anatomy, situated below the orbit of the eye.
4. A suborbital part; such as, a bone, nerve, or cartilage.

1. Located above the orbit of the eye: the supraorbital ridge.
2. Located or occurring above the eye socket: supraocular.