from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A white, red-brown, orange, or light blue principal strontium ore, essentially strontium sulfate, SrSO4, found in sedimentary rock. Also called celestine.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A colourless, orange or blue mineral, strontium sulfate, SrSO4, that is an ore of strontium and constitutes the skeletons of Acantharea.
from The Century Dictionary and Cyclopedia
- n. In mineralogy, native strontium sulphate.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a mineral consisting of strontium sulphate
celestine + -ite1.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin caelestis ("celestial, heavenly"), "celestial" because of the usual blue shade. (Wiktionary)