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[nawt-l-uh s, not-] /ˈnɔt l əs, ˈnɒt-/
noun, plural nautiluses, nautili
[nawt-l-ahy, not-] /ˈnɔt lˌaɪ, ˈnɒt-/ (Show IPA),
for 1, 2.
Also called chambered nautilus, pearly nautilus. any cephalopod of the genus Nautilus, having a spiral, chambered shell with pearly septa.
(initial capital letter) the first nuclear-powered submarine launched by the U.S. Navy.
1595-1605; < Latin < Greek nautílos paper nautilus, literally, sailor, derivative of naûs ship; the webbed dorsal arms of the paper nautilus were thought to have been used as sails Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for nautilus
  • nautilus eventually overcame this problem during four additional field tests.
British Dictionary definitions for nautilus


noun (pl) -luses, -li (-ˌlaɪ)
any cephalopod mollusc of the genus Nautilus, esp the pearly nautilus
short for paper nautilus
Word Origin
C17: via Latin from Greek nautilos sailor, from naus ship
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for nautilus
marine cephalopod, 1601, from L. nautilus, in Pliny a kind of marine snail (including also squid, cuttlefish, polyps, etc.), from Gk. nautilos, "paper nautilus," lit. "sailor," from nautes "sailor," from naus "ship" (see naval). The cephalopod was formerly thought to use its webbed arms as sails.
Online Etymology Dictionary, © 2010 Douglas Harper
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