Definitions

from The Century Dictionary.

  • noun In mineralogy, a phosphate containing fluorin as an essential part.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) A double salt of fluoric and phosphoric acids.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun chemistry A double salt of fluoric acid and phosphoric acid.

Etymologies

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Examples

  • Thus the sulphate constitutes the minerals anhydrite, alabaster, gypsum, and selenite; the carbonate occurs dissolved in most natural waters and as the minerals chalk, marble, calcite, aragonite; also in the double carbonates such as dolomite, bromlite, barytocalcite; the fluoride as fluorspar; the fluophosphate constitutes the mineral apatite; while all the more important mineral silicates contain a proportion of this element.

    Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"

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