Salts, specifically ions. The term electrolyte means that this ion is electrically-charged and moves to either a negative (cathode) or positive (anode) electrode. Electrolyte substances are often used as transfusions in dehydrated animals.
Soluble inorganic compounds whose ions will conduct an electrical current in solution.
Salt-like substances in the blood, including sodium, potassium and chloride, which must be kept at normal levels in order for body organs to function properly.