gaylussite

[ gey-luh-sahyt ]
/ ˈgeɪ ləˌsaɪt /

noun

a rare mineral, hydrated carbonate of sodium and calcium.

Origin of gaylussite

1826; named after J. L. Gay-Lussac; see -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019