nautilus

Meanings

Plural: nautili, nautiluses

Noun

• a submarine that is propelled by nuclear power
• cephalopod mollusk of warm seas whose females have delicate papery spiral shells
• cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions
• 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, of which Nautilus is the type genus.
• A kind of diving bell that sinks or rises by means of compressed air.
• A paper nautilus (actually an octopus).

Synonyms

Argonaut, Argonauta argo, chambered nautilus, nuclear submarine, nuclear-powered submarine, paper nautilus, pearly nautilus