fluorapatite

fluorapatite

[floor-ap-uh-tahyt, flawr-, flohr-]
noun
a crystalline mineral, Ca 5 (PO 4 ) 3 F, formed from hydroxyapatite in the presence of fluoride, that has a hardening effect on bones and teeth.

Origin:
1880–85; < German Fluorapatit; see fluor-, apatite

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To fluorapatite
Collins
World English Dictionary
fluorapatite (ˌflʊəˈræpətaɪt)
 
n
a mineral consisting of calcium fluorophosphate; the most common form of apatite

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Encyclopedia Britannica
Encyclopedia

fluorapatite

common phosphate mineral, a calcium fluoride phosphate, Ca5(PO4)3F. It occurs as minute, often green, glassy crystals in many igneous rocks, and also in magnetite deposits, high-temperature hydrothermal veins, and metamorphic rocks; it also occurs as collophane in marine deposits. For detailed physical properties, see phosphate mineral (table)

Learn more about fluorapatite with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature