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The Collaborative International Dictionary
fluor

Fluorite \Flu"or*ite\, n. (Min.) Calcium fluoride ( CaF2), a mineral of many different colors, white, yellow, purple, green, red, etc., often very beautiful, crystallizing commonly in cubes with perfect octahedral cleavage; also massive. It is used as a flux. Some varieties are used for ornamental vessels. Also called fluor spar, or simply fluor.

Douglas Harper's Etymology Dictionary
fluor

1660s, an old chemistry term for "minerals which were readily fusible and useful as fluxes in smelting" [Flood], from Latin fluor, originally meaning "a flowing, flow" (see fluent), said to be from a translation of the German miners' name, flusse. Since 1771 applied to minerals containing fluorine, especially calcium fluoride (fluorspar or fluorite).

Wiktionary
fluor

n. fluorite (symbol: F).

WordNet
fluor

n. a soft mineral (calcium fluoride) that is fluorescent in ultraviolet light; chief source of fluorine [syn: fluorite, fluorspar]

Wikipedia
Fluor

The word may also refer to:

  • Fluorite: class of minerals
  • Fluor Corporation: a company
  • Fluorine: the chemical element
  • Fluorophore, a fluorescent chemical compound

Usage examples of "fluor".

Now, in the case of a debilitated female patient, a physician naturally thinks first of chlorosis or the fluor albus or some other such adust ion of the womb.

With ores that produce a thick slag the addition of 5 grams of fluor spar will be an advantage.

Fluor, is present in the surface of the bones, in the enamel of the teeth, and in the elastic fibres of the skin, muscular tissue and blood vessels.