thaumasite
noun
thau·ma·site
\ˈthȯməˌsīt\
Definition of thaumasite
-s
: a white mineral Ca4Al6Si6O24(SO4,CO3,Cl2) consisting of a basic silicate, carbonate, and sulfate of calcium (hardness 3.5, specific gravity 1.88)
Explore M-W
There's more!
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.
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 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
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).
Writing? Check your grammar now!