Main definitions of nautilus in English

: nautilus1Nautilus2

nautilus1

noun

  • 1A cephalopod mollusk with a light external spiral shell and numerous short tentacles around the mouth. Nautiluses swim with the buoyant gas-filled shell upright and descend to greater depths during the day.

    • ‘The shape of the museum is like a giant, spiral seashell - a nautilus - made of concrete.’
    • ‘The eggs and hatchlings of the chambered nautilus are the largest of all cephalopods.’
    • ‘The aborigines believe that the skeleton of each dead moon drops into the sea and becomes the shell of the chambered nautilus.’
    • ‘The beautiful nautilus shell is white to orange, with white stripes and a central, black whorl.’
    • ‘The pearly nautilus is an exception to most generalizations about cephalopods.’
    • ‘Some patterns in nature are formed by natural growth mechanisms, as with the spiral shape of the nautilus shell.’
    • ‘The shell contains a gas which makes it semi-buoyant, permitting the nautilus to change depth and to swim.’
    • ‘Most resorts in Manado can make special arrangements with local fishermen to show you the prehistoric nautilus.’
    • ‘Unlike most other cephalopods that have a short life span, the chambered nautilus can live 16 or more years.’
    • ‘Geology students recommend you check out the nautilus shells in limestone mounted on the bar.’
  • 2

    another term for argonaut

Origin

Modern Latin, from Latin, from Greek nautilos, literally ‘sailor’.

Pronunciation

nautilus

/ˈnôd(ə)ləs//ˈnɔd(ə)ləs/

Main definitions of nautilus in English

: nautilus1Nautilus2

Nautilus2

proper noun

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

    1. 1.1trademark An exercise machine that matches resistance with output of force.

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.

Pronunciation

Nautilus

/ˈnôd(ə)ləs/