(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 beta orbiter

(space science) An orbit where spacecraft which have reached their end of life can be safely positioned to avoid colliding with other spacecraft or the Earth.

plural of orbital plane

plural of orbital motorway

(anatomy) 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.

plural of antibonding orbital

plural of atomic orbital

plural of bonding orbital

Orbital riveting.