The Chinese word **熔化** (rónghuà), meaning "to melt" or "melting," is a compound word formed by combining two meaningful characters: **熔**, which specifically means "to melt" or "to fuse" (often involving high heat, as in metallurgy), and **化**, a versatile character meaning "to change" or "to transform." Together, they create a precise term where 熔 specifies the type of action (melting by heat) and 化 indicates the general process of transformation, thus explicitly denoting the physical process of changing from a solid to a liquid state through the application of heat.