溶解 róngjiě to dissolve
How to remember 溶解: 溶 to melt + 解 to explain = to dissolve.
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How it is used
- A chemistry term: to dissolve - 糖溶解在水里 (táng róngjiě zài shuǐ lǐ) sugar dissolves in water.
- Specifically a solid/gas dispersing into a liquid to form a solution.
- Contrast 融化 (rónghuà, to melt, e.g. ice→water) and 溶化 (a solid dissolving); 溶解 is the scientific 'dissolve into solution'.