plural noun
Bel·​em·​nit·​i·​dae | \ ˌbe-ləm-ˈni-tə-ˌdē \

Definition of Belemnitidae

: a family of extinct Mesozoic dibranchiate cephalopods comprising the belemnites

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for Belemnitidae

borrowed from New Latin, from Belemnites, adaptation as a genus name of belemnites belemnite + -idae -idae

Note: The family name was probably introduced by Richard Owen in “Descriptions of Some New and Rare Cephalopoda,” Transactions of the Zoological Society of London, vol. 2 (1841), pp. 103-30. The species name is simply an adaptation of the traditional New Latin name for fossil belemnites. Nomenclator Zoologicus (1939) attributes its first use to Johann Gesner, Tractatus physicus de petrifactis (Leiden, 1758), p. 40, and to Jean-Baptiste Lamarck in Mémoires de la Société d’Historie Naturelle de Paris, vol. 1 (1799), p. 81 (it is used there without attribution and without a specific epithet).

Learn More About Belemnitidae

Dictionary Entries Near Belemnitidae




See More Nearby Entries 

Statistics for Belemnitidae

Cite this Entry

“Belemnitidae.” Dictionary, Merriam-Webster, Accessed 2 Dec. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Name that Thing: Flower Edition

Spell It

Can you spell these 10 commonly misspelled words?

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!