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Meaning of nautilus

nau•ti•lus

Pronunciation: (nôt'l-us, not'-), [key]
— pl. nau•ti•lus•es, nau•ti•li
  1. Also calledany cephalopod of the genus Nautilus, having a spiral, chambered shell with pearly septa.
  2. See
  3. (cap.) the first nuclear-powered submarine launched by the U.S. Navy.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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