Definition of hydroboracite
: a mineral CaMgB6O11.6H2O consisting of a white hydrous calcium magnesium borate and occurring in fibrous and foliated masses
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 hydroboracite
obsolete German hydroboracit (now hydroborazit), from German hydr- + Medieval Latin borac-, borax borax + German -it -ite
Seen and Heard
What made you want to look up hydroboracite? Please tell us where you read or heard it (including the quote, if possible).