plural noun Bel·em·noi·dea \ˌbe-ləm-ˈnȯi-dē-ə\

Definition of Belemnoidea

  1. :  an order or other division of Dibranchiata comprising the belemnites and sometimes the genus Spirula

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Origin and Etymology of belemnoidea

borrowed from New Latin, from Belemnites, genus name + -oidea -oidea — more at Belemnitidae

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a brief usually trivial fact

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