A satellite orbit where the orbital period is equal to, or multiples of, the Earth’s rotational period; i.e. making one, two, three, etc., orbits in a 24-hour period. Examples include geosynchronous (period equals Earth's rotation), semisynchronous (two orbits per day); and geostationary (geosynchronous orbit where satellite maintains a fixed position on the equator).

(physics) An orbital formed by the combination of multiple atomic orbitals on the same atom

the bony ridge beneath the eyebrow; the browbone

(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 Hohmann orbit

plural of beta orbiter

plural of graveyard orbit

(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