Definition of nautiloid

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< nautical mile

nautilus >

nau·ti·loid

(nôt

l-oid

) KEY

NOUN:

A mollusk of the subclass Nautiloidea, which includes the nautiluses and numerous extinct species known only from fossils.

ETYMOLOGY:
From New Latin Nautilodea, subclass name : Latin nautilus, nautilus ; see nautilus + Greek -oeids, -oid

OTHER FORMS:
nauti·loid(Adjective)

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