/sil"vuyt/ , n.
a common mineral, potassium chloride, KCl, colorless to milky-white or red, occurring in crystals, usually cubes, and masses with cubic cleavage, bitter in taste: the most important source of potassium.
Also, sylvin, sylvine /sil"vin/ .
[ 1965-70; sal digestivus ) Sylvi ( i ) digestive salt of Sylvius (see SYLVIAN FISSURE) + -ITE 1 ; r. sylvine ]