sylvite Definition
syl·vite (sil′vīt′)
noun
a white or colorless mineral, KCl, that is the chief ore of the potassium used to make fertilizers
Etymology: earlier sylvine < Fr < ModL sal digestivus sylvii, lit., digestive salt of Sylvius (after Franz de la Boë Sylvius, 1614-72, physician at Leyden)

