nautiloid definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of a subclass (Nautiloidea) of cephalopods with chambered, coiled, or straight external shells: the nautiluses are the only remaining representatives
Origin: ; from Modern Latin Nautiloidea: see nautilus and amp; -oid
nautiloid definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A mollusk of the subclass Nautiloidea, which includes the nautiluses and numerous extinct species known only from fossils.
Origin: From New Latin Nautiloīdea, subclass name : Latin nautilus, nautilus; see Nautilus + Greek -oeidēs, -oid.
- nauˈti·loid adjective
nautiloid - Science Definition
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.