celestine
Celestine (noun) means a pale blue-white mineral (strontium sulfate) that forms in orthorhombic crystals, mined mainly as a source of strontium. Example: “The museum displayed a cluster of celestine crystals with a faint blue tint.”
How to use celestine
Learner’s notesIn plain EnglishEither a pale blue mineral or a member of a specific Catholic monastic order — context makes clear which.
Word forms
- Plural
- celestines
- Comparative
- more celestine
- Superlative
- most celestine
Fill the gap
Can you complete this real example?
The museum displayed a cluster of _____ crystals with a faint blue tint.
Etymology
From Old French celestin, from Latin caelestinus ("heavenly"), from caelum ("sky, heaven").