kainite

noun

kai·​nite ˈkī-ˌnīt 

ˈkā-

variants or less commonly kainit

kī-ˈnēt 

: a natural salt KMg(SO₄)Cl·3H₂O consisting of a hydrous sulfate and chloride of magnesium and potassium that is used as a fertilizer and as a source of potassium and magnesium compounds

Word History

Etymology

German Kainit, from Greek kainos new — more at recent

First Known Use

1868, in the meaning defined above