1. [ noun ] (zoology) cephalopod mollusk of warm seas whose females have delicate papery spiral shells
Synonyms: Argonauta_argo argonaut paper_nautilus
Related terms: octopod Argonauta
2. [ noun ] (nautical,military,transportation) a submarine that is propelled by nuclear power
Synonyms: nuclear_submarine nuclear-powered_submarine
Related terms: submarine
3. [ noun ] (zoology) cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions
Synonyms: pearly_nautilus chambered_nautilus
Related terms: cephalopod genus_Nautilus