tilasite

noun

til·​as·​ite
ˈtiləˌsīt
plural -s
: a mineral CaMg(AsO4)F consisting of a magnesium calcium arsenate and fluoride and occurring in violet-gray granular masses (specific gravity 3.3)

Word History

Etymology

Swedish tilasit, from Daniel Tilas †1772 Swedish mining engineer + Swedish -it -ite

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Cite this Entry

“Tilasite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tilasite. Accessed 17 Jul. 2024.

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