The Collaborative International Dictionary of English v.0.48:
nuclear-powered submarine \nuclear-powered submarine\ n. A submarine for which the motive power comes from the energy generated by a nuclear reactor. Same as nuclear submarine. [WordNet 1.5]WordNet (r) 3.0 (2006):
nuclear-powered submarine n 1: a submarine that is propelled by nuclear power [syn: nautilus, nuclear submarine, nuclear-powered submarine]