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Nautilus

Pronunciation: /ˈnɔːtɪləs/

Definition of Nautilus

the first nuclear-powered submarine, launched in 1954. This US navy vessel made a historic journey (1-5 August 1958) under the ice of the North Pole.

Origin:

a name previously given to Robert Fulton's ‘diving boat’ (1800), also to the fictitious submarine in Jules Verne's Twenty Thousand Leagues under the Sea