1. A submarine that is propelled by nuclear power
   - nuclear submarine, nuclear-powered submarine 
2. Cephalopod mollusk of warm seas whose females have delicate papery spiral shells
   - paper nautilus, Argonaut, Argonauta argo 
3. Cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions
   - chambered nautilus, pearly nautilus

Derived forms: nautili, nautiluses

Type of: cephalopod, cephalopod mollusk, octopod, pigboat, sub, submarine, U-boat

Part of: Argonauta, genus Argonauta, genus Nautilus

Encyclopedia: Nautilus Nautilus, Incorporated

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