potassium chloride n 1: salt of potassium (KCl) (trade names K-Dur 20, Kaochlor and K-lor and Klorvess and K-lyte); taken in tablet form to treat potassium deficiency [syn: {potassium chloride}, {potassium muriate}, {potash muriate}, {K-Dur 20}, {Kaochlor}, {K-lor}, {Klorvess}, {K-lyte}]