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chambered nautilus

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nau⋅ti⋅lus

  [nawt-l-uhs, not-]
–noun, plural nau⋅ti⋅lus⋅es, nau⋅ti⋅li  [nawt-l-ahy, not-] for 1, 2.
1. Also called chambered nautilus, pearly nautilus. any cephalopod of the genus Nautilus, having a spiral, chambered shell with pearly septa.
2. paper nautilus.
3. (initial capital letter) the first nuclear-powered submarine launched by the U.S. Navy.
Origin:
1595–1605; < L < Gk nautílos paper nautilus, lit., sailor, deriv. of naûs ship; the webbed dorsal arms of the paper nautilus were thought to have been used as sails
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To chambered nautilus
cham·bered nautilus   (chām'bərd)   
n.  See nautilus.
nau·ti·lus   (nôt'l-əs)   
n.   pl. nau·ti·lus·es or nau·ti·li (nôt'l-ī')

  1. A cephalopod mollusk of the genus Nautilus, especially N. pompilius, found in the Indian and Pacific oceans and having a spiral, pearly-lined shell with a series of air-filled chambers. Also called chambered nautilus, pearly nautilus.

  2. The paper nautilus.


[Latin, from Greek nautilos, sailor, nautilus, from nautēs, mariner, from naus, ship; see nāu- in Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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