Definition of cryolite in English:

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Pronunciation: /ˈkrīəˌlīt/


A white or colorless mineral consisting of a fluoride of sodium and aluminum. It is added to bauxite as a flux in aluminum smelting.
Example sentences
  • The deposit at the Eureka tunnel was mined for cryolite and thomsenolite, which were used as a flux in the manufacture of glass bottles.
  • Hall found that aluminum oxide will melt at a much lower temperature if it is first mixed with a mineral known as cryolite.
  • Fluorine never occurs as an element in nature, but is found in minerals such as fluorspar, fluorapatite, and cryolite.


Early 19th century: from cryo- 'cold, frost' (because the main deposits are found in Greenland) + -lite.

For editors and proofreaders

Syllabification: cry·o·lite

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