noun nau·ti·lus \ˈn-tə-ləs, ˈnä-\
plural nau·ti·lus·es or nau·ti·li\-tə-ˌlī, -ˌlē\

Definition of NAUTILUS

:  any of a genus (Nautilus) of cephalopod mollusks of the South Pacific and Indian oceans with a spiral chambered shell that is pearly on the inside —called also chambered nautilus

Illustration of NAUTILUS

Origin of NAUTILUS

New Latin, from Latin, paper nautilus, from Greek nautilos, literally, sailor, from naus ship
First Known Use: 1601


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