(Latin: rut or track made in the ground by a wheel; circle, ring, round surface, disk)
Also used in its extended anatomical sense as, "the portion of the skull immediately surrounding the eye".
2. Denoting an electron confined to its orbit in an atom, as distinguished from a free electron.
2. A spacecraft or satellite designed to orbit an astronomical object but not to land on it.
Also called "space-shuttle orbiter": the crew-carrying and the payload-carrying component of the space shuttle.
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.
2. Any operation creating an opening into the orbit.
The approach may be either anterior or lateral.
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.
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.
2. Situated behind the orbit; such as, the postorbital scales of some fishes and reptiles.
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.