The term 'salt solution' can be broken down into two crossword solutions: BRINE (5 letters) and SALINE (6 letters). BRINE is a solution of salt in water, usually used for pickling or preserving food. SALINE is a solution of salt in water, often used in medical settings to clean wounds or as an intravenous fluid. Both BRINE and SALINE are examples of salt solutions, which are solutions that contain a high concentration of salt.