Osmoprotective refers to a substance or process that protects cells from damage caused by osmotic stress, which occurs when the concentration of solutes inside and outside of the cell is unequal. Some synonyms for osmoprotective include cryoprotective, antioxidative, and stabilizing. Cryoprotective agents protect cells from damage caused by freezing, while antioxidative agents combat oxidative stress caused by free radicals. Stabilizing agents can help cells maintain their structure and function under stressful conditions. Other synonyms for osmoprotective include protectants, preservatives, and stabilizers. Essentially, any substance or process that helps protect cells from damage caused by osmotic stress can be considered osmoprotective.