/ Dictionary / Index B belemnite: Meaning and Definition of Find definitions for: bel•em•nite Pronunciation: (bel'um-nīt"), [key] — n. Paleontol. a conical fossil, several inches long, consisting of the internal calcareous rod of an extinct animal allied to the cuttlefish; a thunderstone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: belemnite (Thesaurus) Belém bel-esprit* Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language