The term 'LOSE HEAT' can be solved by two crossword solutions: COOL (4 letters) and GETCOLD (7 letters). Losing heat is a process in which an object or substance releases energy in the form of heat. This process can occur naturally, such as when a hot object cools down, or it can be caused by external forces, such as when a fire is extinguished. In either case, the result is a decrease in temperature.