(chemistry) Either of a pair of orbitals, of two molecules or fragments, that overlap to form a bond; especially the HOMO and LUMO orbitals

plural of cranial orbit

A form of riveting involving a rotating peen tool mounted at an angle.

Orbital riveting.

plural of subsynchronous orbit

In a retro-orbital direction.

(anatomy) Situated behind the orbit or the eye.

The orbit that an astronomical body such as a planet, asteroid, comet or satellite would follow if suddenly all perturbing forces other than the gravitational attraction of the Sun or (for a satellite) its planet were to disappear.

(astrophysics) geostationary Earth orbit / (astrophysics) geostationary orbit (an orbit around any body)

plural of orbital cavity