nautilus, nuclear submarine, nuclear-powered submarine(noun)

a submarine that is propelled by nuclear power

paper nautilus, nautilus, Argonaut, Argonauta argo(noun)

cephalopod mollusk of warm seas whose females have delicate papery spiral shells

chambered nautilus, pearly nautilus, nautilus(noun)

cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions

nautilus(Noun)

A marine mollusc, of the family Nautilidae native to the Pacific Ocean and Indian Ocean, which has tentacles and a spiral shell with a series of air-filled chambers.

Nautilus(noun)

the only existing genus of tetrabranchiate cephalopods. About four species are found living in the tropical Pacific, but many other species are found fossil. The shell is spiral, symmetrical, and chambered, or divided into several cavities by simple curved partitions, which are traversed and connected together by a continuous and nearly central tube or siphuncle. See Tetrabranchiata

Nautilus(noun)

the argonaut; -- also called paper nautilus. See Argonauta, and Paper nautilus, under Paper

Nautilus(noun)

a variety of diving bell, the lateral as well as vertical motions of which are controlled, by the occupants

Nautilus

The sole genus in the family Nautilidae, order Nautilida, comprised of CEPHALOPODS with spiral external shells that are separated into chambers.