hydrargillite

[ hahy-drahr-juh-lahyt ]
/ haɪˈdrɑr dʒəˌlaɪt /

noun Mineralogy.

Origin of hydrargillite

First recorded in 1795–1805; hydr-1 + argillite
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019