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[na-truh-lahyt, ney-] /ˈnæ trəˌlaɪt, ˈneɪ-/
a white or colorless zeolite mineral, a hydrous silicate of sodium and aluminum, Na 2 Al 2 Si 3 O 1 0 ⋅2H 2 O, often occurring in acicular crystals.
1795-1805; natro(n) + -lite Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for natrolite
  • natrolite is an orthorhombic mineral that forms needles extending from the nucleation site.
  • Radiation damage was reduced at low temperature in albite but was enhanced in natrolite.
British Dictionary definitions for natrolite


/ˈnætrəˌlaɪt; ˈneɪ-/
a colourless, white, or yellow zeolite mineral consisting of sodium aluminium silicate in the form of needle-like orthorhombic crystals. Formula: Na2Al2Si3O10.2H2O
Word Origin
C19: from natron + -lite
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for natrolite

hydrated sodium aluminosilicate mineral, Na2Al2Si3O102H2O, in the zeolite family. It has been found in the form of colourless or white, glassy, slender crystals or fibrous masses filling cavities or fissures in basaltic rocks, as in Trentino, Italy; Brevik, Nor.; Belfast, N.Ire.; the Faroe Islands; and northeastern New Jersey, U.S. Natrolite was one of the first zeolite minerals for which cation-exchange properties (dissolved sodium, potassium, calcium, and magnesium readily replacing one another in the molecular structure) were discovered. It is used in softening water.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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