/ Dictionary / Index A aragonite: Meaning and Definition of Find definitions for: a•rag•o•nite Pronunciation: (u-rag'u-nīt", ar'u-gu-), [key] — n. a mineral, orthorhombic calcium carbonate, CaCO, chemically identical with calcite but differing in crystallization and in having a higher specific gravity and less marked cleavage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aragonite (Thesaurus) Aragonese Araguarí Related Content Daily Word Quiz: confectionery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language