nautiloid

nau·ti·loid

noun \ˈnȯ-tə-ˌlȯid, 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

Rhymes with NAUTILOID

adenoid, alkaloid, amoeboid, aneroid, anthropoid, arachnoid, asteroid, Australoid, carcinoid, Caucasoid, celluloid, crystalloid, echinoid, ellipsoid, embryoid, eunuchoid, flavonoid, helicoid, hemorrhoid, hominoid, humanoid, hysteroid, metalloid, Mongoloid, myeloid, nucleoid, null and void, obovoid, opioid, osteoid, overjoyed, paranoid, planetoid, Polaroid, retinoid, rheumatoid, solenoid, Stalinoid, trapezoid, unalloyed, unemployed