hiortdahlite

noun

hiort·​dahl·​ite

ˈyȯ(r)tˌdäˌlīt,

-dəˌl-

plural -s

: a rare mineral (Ca,Na)₁₃Zr₃Si₉(O,OH,F)₃₃ consisting essentially of a sodium calcium zirconium silicate containing also fluorine and occurring as pale yellow tabular triclinic crystals

Word History

Etymology

Norwegian hiortdahlit, from T. H. Hiortdahl †1925 Norwegian chemist + Norwegian -it -ite

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!