Of or pertaining to a nucleus; as, the nuclear spindle (see Illust. of Karyokinesis) or the nuclear fibrils of a cell; the nuclear part of a comet, etc.

of, pertaining to, or using nuclear weapons; a nuclear exchange, i.e. a reciprocal bombardment by nuclear weapons..

Of, pertaining to, or powered by atomic energy; same as nuclear-powered; as, a nuclear submarine; a nuclear power plant.

Of or pertaining to nations possessing nuclear weapons; as, the nuclear club.