orbital UK /ɔː.bɪt.əl/US /ɔɹ.bət.l̩/adjective 3noun 3forms 1 adjective3 •Of or relating to, or forming an orbit (such as the orbit of a moon, planet, or spacecraft). •(UK) (of roads, railways) Passing around the outside of an urban area.The M25 is an orbital motorway around London. •Of or relating to the eye socket (eyehole). noun3 •A specification of the energy and probability density of one or more electrons at any point in an atom or molecule, representable as a wave function. •(UK) Ellipsis of orbital motorway. •Ellipsis of orbital sander.As with most power tools, orbitals can be divided into light and heavy-duty categories. — 1967 formsorbitals
