(astronomy) The sidereal year of a planet. (I.e., in the definition for "sidereal year", replace "Earth" by the given planet.)

(physics, chemistry) A method of determining the structure of a molecule by assuming that electrons are not fixed to bonds between individual atoms

(inorganic chemistry) A complex, typically of a transition element, in which the hybridization of the central metal atom utilizes d orbitals from the shell inside that of the outermost occupied shell

azimuthal quantum number

plural of orbital quantum number

plural of inner orbital complex

plural of sidereal orbital period

(science fiction) A satellite or space station, found in many different works of science fiction, meant to defend a planet against attack from space.

(ophthalmology, neurology) A collection of cranial nerve deficits associated with a mass lesion near the apex of the orbit, often leading to ophthalmoplegia.

(anatomy) One of two openings transmitting nerves and blood vessels to or from the orbit, situated inferiorly between the greater wing of the sphenoid bone and the maxilla.