融化 (róng huà) is a verb meaning 'to melt' — the process by which a solid turns into a liquid due to heat or other physical conditions. The character 融 (róng) means 'to blend', 'to merge', or 'to dissolve', often implying smooth integration; 化 (huà) means 'to change', 'to transform', or 'to become'. Together, they emphasize a gradual, natural transformation from solid to liquid state. This word is commonly used for ice, snow, butter, chocolate, or glaciers — especially in contexts involving temperature change, seasons, or environmental science.

Unlike the more general term 溶化 (róng huà), which can refer to dissolving in a solvent (e.g., salt in water), 融化 specifically describes thermal melting without requiring a liquid medium. It’s neutral in register and appears frequently in weather reports, science textbooks, and everyday descriptions of spring thawing or cooking processes. It’s not used for metaphorical 'melting' of emotions or relationships — for those, words like 感动 (gǎndòng) or 融合 (rónghé) are preferred.