antifreeze
noun [ U ] uk/ˈæn.ti.friːz/ us/ˈæn.t̬i.friːz/
防冻剂，阻冻剂；抗凝剂；（尤指用于汽车散热器中的）防冻液
a liquid that is added to water in order to lower the temperature at which it freezes, used especially in car radiators (= cooling systems) in very cold weather