a white to pale-blue mineral, strontium sulfate, SrSO4, occurring in tabular crystals, the principal ore of strontium.

Also cel·es·tine [sel-i-stin, -stahyn] /ˈsɛl ɪ stɪn, -ˌstaɪn/.

Origin of celestite

1850–55; celest(ine) celestite (< German Zölestin < Latin coelest(is), variant of caelestis celestial + German -in -in2) + -ite1

Celestine I

[sel-uh-stahyn, si-les-tin, -tahyn]


Saint,died a.d. 432, Italian ecclesiastic: pope 422–432.

Celestine II


Guido di Castello, flourished 12th century, Italian ecclesiastic: pope 1143–44.

Celestine III


Giacinto Bobone, died 1198, Italian ecclesiastic: pope 1191–98.

Celestine IV


Godfrey Castiglione, died 1241, Italian ecclesiastic: pope 1241.

Celestine V


SaintPietro di Murrone or Morone, 1215–96, Italian ascetic: pope 1294.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for celestine


celestine (ˈsɛlɪstɪn, -ˌstaɪn)


a white, red, or blue mineral consisting of strontium sulphate in orthorhombic crystalline form: a source of strontium compounds. Formula: SrSO 4

Word Origin for celestite

C19: from German Zölestin, from Latin caelestis celestial (referring to the blue colour) + -ite 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012