Definition of thaumasite
: a white mineral Ca4Al6Si6O24(SO4,CO3,Cl2) consisting of a basic silicate, carbonate, and sulfate of calcium (hardness 3.5, specific gravity 1.88)
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of thaumasite
International Scientific Vocabulary thaumas- (from Greek thaumasios wondrous, from thauma miracle, wonder) + -ite — more at theater
Seen and Heard
What made you want to look up thaumasite? Please tell us where you read or heard it (including the quote, if possible).