any of a subclass (Nautiloidea) of cephalopods with chambered, coiled, or straight external shells: the nautiluses are the only remaining representatives
Origin of nautiloid; from Modern Latin Nautiloidea: see nautilus and amp; -oid
Any of various marine cephalopod mollusks formerly classified in the subclass Nautiloidea, including the nautiluses and numerous extinct species known only from fossils.
Origin of nautiloidFrom New Latin Nautiloīdea, former subclass name : Latin nautilus, nautilus; see Nautilus + Greek -oeidēs, -oid.
(comparative more nautiloid, superlative most nautiloid)
- (zoology) Resembling a nautilus.