Dictionary

nautiloid

noun nau·ti·loid \ˈn-tə-ˌlid, ˈnä-\

Definition of NAUTILOID

:  any of a subclass (Nautiloidea) of cephalopods bearing an external straight, curved, or spiral shell that were abundant chiefly in the Paleozoic but are represented in the recent fauna only by the nautiluses
nautiloid adjective

First Known Use of NAUTILOID

circa 1728

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May 24, 2015
erudite Hear it
learned or pedantic
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