The word "解冻" is formed by combining the character "解", which historically depicts using a knife to separate horns from a cow, conveying the idea of loosening or releasing, with the character "冻", which consists of the ice radical "冫" indicating a frozen state and the component "东" primarily providing phonetic guidance. Together, they create a compound meaning where "解" acts on the frozen state denoted by "冻", resulting in the literal sense of releasing from freezing, hence meaning "to thaw" or "defrost".