Try Our Apps


Supposedly vs. Supposably


[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.
Origin of nautilus
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. 2015.
Cite This Source
Examples from the Web for nautilus
Contemporary Examples
Historical Examples
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
Cite This Source
Word Origin and History for nautilus

marine cephalopod, c.1600, from Latin nautilus, in Pliny a kind of marine snail (including also squid, cuttlefish, polyps, etc.), from Greek nautilos "paper nautilus," literally "sailor," from nautes "sailor," from naus "ship" (see naval). The cephalopod formerly was thought to use its webbed arms as sails.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for nautilus

Few English speakers likely know this word

Word Value for nautilus

Scrabble Words With Friends

Nearby words for nautilus