viséite

noun

vi·​sé·​ite

vēˈzāˌīt

plural -s

: a mineral Ca₅Al₁₀(PO₄)₆(SiO₄)₃(OH)₁₀.20–25H₂O consisting of a hydrous hydroxide phosphate and silicate of aluminum and calcium

Word History

Etymology

French, from Visé, town in Belgium, its locality + French -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!