Calgon
[ kal-gon ]
/ ˈkæl gɒn /
Trademark.
a brand of sodium phosphate glass (sodium hexametaphosphate), soluble in water: used as a water-softening agent.
British Dictionary definitions for calgon
Calgon
/ (ˈkælɡɒn) /
noun
trademark
a chemical compound, sodium hexametaphosphate, with water-softening properties, used in detergents