/ Dictionary / Index A apatite: Meaning and Definition of Find definitions for: ap•a•tite Pronunciation: (ap'u-tīt"), [key] — n. a common mineral, calcium fluorophosphate, CaFPO, occurring in individual crystals and in masses and varying in color, formerly used in the manufacture of phosphate fertilizers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: apatite (Thesaurus) apathy APB Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language