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th described by a heavenly body in its periodical revolution around another body; as, the orbit of Jupiter, of the earth, of the moon.

Of or pertaining to an orbit. "Orbital revolution." J. D. Forbes. Orbital index (Anat.), in the skull, the ratio of the vertical height to the transverse width of the orbit, which is taken as the standard, equal to 100.

Orbital. [R.] Dunglison.

Situated around the orbit; as, the orbitary feathers of a bird.

A division of spiders, including those that make geometrical webs, as the garden spider, or Epeira.

A genus of living Foraminifera, forming broad, thin, circular disks, containing numerous small chambers.

Of or pertaining to the orbit and the nose; as, the orbitonasal, or ophthalmic, nerve.

Of or pertaining to the sphenoid bone and the orbit, or to the orbitosphenoid bone. -- n.

Of or pertaining to the orbitosphenoid bone; orbitosphenoid.

Orbital. [R.]

Orbation. [Obs.] Bp. Hall.

Absorption. [Obs.]

Same as Antorbital.

Pertaining to, or situated in, the region of the front of the orbit. -- n.

hence, enormity; extravagance; gross deviation from rule, right, or propriety; as, the exorbitances of the tongue or of deportment; exorbitance of demands. "a curb to your exorbitancies." Dryden. The lamentable exorbitances of their superstitions. Bp. Hall.

Departing from an orbit or usual track; hence, deviating from the usual or due course; going beyond the appointed rules or established limits of right or propriety; excessive; extravagant; enormous; inordinate; as, exorbitant appetites and passions; exorbitant charges, demands, or claims. Foul exorbitant desires. Milto…

In an exorbitant, excessive, or irregular manner; enormously.

To go out of the track; to deviate. [Obs.] Bentley.

Below the orbit; as, the infraorbital foramen; the infraorbital nerve.

Between the orbits; as, the interorbital septum.