nautiloid
[ nawt-l-oid ]
/ ˈnɔt lˌɔɪd /
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noun
a mollusk of the subclass Nautiloidea, including nautiluses and many fossil species that were abundant in the Ordovician and Silurian periods.
adjective
noting or pertaining to a nautiloid.
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Words nearby nautiloid
nautch, Nautes, nautical, nautical day, nautical mile, nautiloid, nautilus, nautophone, NAV, Navaho, navaid
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for nautiloid
Cephalic shield pointed behind; shell internal, chiefly membranous, with calcified nucleus, nautiloid; parapodia forming fins.
The remarkable group of the Trilobites had precedence in order of time of the Nautiloid shell-fishes.
The Chain of Life in Geological Time|Sir J. William DawsonHe referred also to the nautiloid shell of the larva falling to one side.
British Dictionary definitions for nautiloid
nautiloid
/ (ˈnɔːtɪˌlɔɪd) /
noun
any mollusc of the Nautiloidea, a group of cephalopods that includes the pearly nautilus and many extinct forms
adjective
of, relating to, or belonging to the Nautiloidea
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
Scientific definitions for nautiloid
nautiloid
[ nôt′l-oid′ ]
Any of various cephalopod mollusks of the subclass Nautiloidea, having a straight or coiled shell divided internally into a series of chambers of increasing size connected by a central tube. The nautiloids include the modern nautiluses as well as numerous extinct species dating back as far as the Cambrian Period.
The American Heritage® Science Dictionary
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