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Any of several cephalopod mollusks of the genus Argonauta that have eight arms, the female of which is much larger than the male and inhabits a paper-thin shell that serves as an egg case. Also called argonaut.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Animals) any cephalopod mollusc of the genus Argonauta, esp A. argo, of warm and tropical seas, having a papery external spiral shell: order Octopoda (octopods). Also called: argonaut Compare pearly nautilus
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
any swimming octopod mollusk of the genus Argonauta: the female produces a delicate shell into which she lays her eggs.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||paper nautilus - cephalopod mollusk of warm seas whose females have delicate papery spiral shells|
octopod - a cephalopod with eight arms but lacking an internal shell
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