The term ICE MELT can be solved by the four letter word SALT. SALT is a mineral composed primarily of sodium chloride, a chemical compound belonging to the larger class of salts; SALT in its natural form as a crystalline mineral is known as rock SALT or halite. SALT is an essential nutrient for human health and is used in food preparation across cultures. It is also used in many industrial processes, and can be used to melt ice on roads and sidewalks.