plural -s
: a mineral K2MgCa2(SO4)4.2H2O occurring usually in fibrous masses of a brick-red color due to iron but consisting essentially of hydrous sulfate of calcium, magnesium, and potassium

Word History


German polyhalit, from poly- + hal- + -it -ite

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Dictionary Entries Near polyhalite

Cite this Entry

“Polyhalite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polyhalite. Accessed 14 Apr. 2024.

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