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 (sĕl′ĭ-stīt′, sə-lĕs′tīt′)
A white, red-brown, orange, or light blue principal strontium ore, essentially strontium sulfate, SrSO4, found in sedimentary rock. Also called celestine.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈsɛlɪˌstaɪt) or


(Minerals) a white, red, or blue mineral consisting of strontium sulphate in orthorhombic crystalline form: a source of strontium compounds. Formula: SrSO4
[C19: from German Zölestin, from Latin caelestis celestial (referring to the blue colour) + -ite1]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈsɛl əˌstaɪt)

also cel•es•tine

(-stɪn, -ˌstaɪn)

a mineral, strontium sulfate, SrSO4, occurring in white to pale blue crystals: the chief ore of strontium.
[1850–55; celest(ine) (< German Zölestin < New Latin coelest(is), for Latin caelestis celestial + German -in -in1) + -ite1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.celestite - a mineral consisting of strontium sulphate
atomic number 38, Sr, strontium - a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
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