Definition of antifreeze

The word "antifreeze" originated in the late 1920s or early 1930s when engineers began to develop chemical formulations to prevent the freezing of cooling systems in engines during extremely cold weather. Prior to the development of antifreeze, water was used as a coolant in engines, but it could freeze at low temperatures, causing engine damage. The original name given to this new product was "radiator antifreeze," which reflected its primary function of preventing the freezing of radiator fluid in engines. The term "antifreeze" was later adopted as a more general term to describe any liquid additive used to prevent freezing or icing in various products, such as windshield washer fluid and winterizing solutions for pipes and swimming pools. The chemical compounds used in antifreeze products are known as ethylene glycol and propylene glycol, which lower the freezing point of the coolant and prevent it from expanding into ice crystals, which could damage engine components. The specific concentration of the antifreeze product determines its freezing point, with higher concentrations providing better protection against extremely cold temperatures. Therefore, the term "antifreeze" derives from the process of preventing freezing in fluids, which has become a critical component in preventing engine damage and ensuring reliable performance in cold weather conditions.