ilvaite

noun

il·​va·​ite

ˈilvəˌīt

plural -s

: a silicate CaFe₃Si₂O₈(OH) of iron and calcium and sometimes manganese related to epidote and occurring in black prismatic crystals and columnar masses (hardness 5.5–6, specific gravity 4.0)

Word History

Etymology

German ilvait, from Ilva (Elba), Italian island in the Mediterranean + German -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!