Definition of nautiloid in English:


Line breaks: naut¦il|oid
Pronunciation: /ˈnɔːtɪlɔɪd


A mollusc of a group of mainly extinct marine molluscs which includes the pearly nautilus.
More example sentences
  • Ammonoids are descendants of the extinct, primitive coiled nautiloids and they are extinct relatives of modern squid, octopus, cuttlefish, and nautilus.
  • Other fossil groups include diverse rugose corals, some tabulate corals, nautiloids, gastropods, and trilobites.
  • Coiled shells, commonly of ammonoid cephalopods, nautiloids, or gastropods, have been given colloquial names such as rams' horns, snakestones, serpentstones, and conger eels.


mid 19th century: from the modern Latin genus name Nautilus (see nautilus).

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Word of the day retroflex
Pronunciation: ˈretrəˌfleks
turned backward