There are several synonyms for the phrase "remove by dissolving," including dissolve, disintegrate, melt, and liquefy. Each of these words refers to the process of breaking down a solid substance by adding liquid or heat, resulting in it becoming a liquid or dispersed particles that can be easily removed. Dissolving refers specifically to a solid substance becoming a solution in a liquid, while disintegrating implies the substance breaking down into small pieces. Melting and liquefying both refer to solids becoming liquids, but liquefying has a more specific meaning of becoming a thick liquid or viscous substance. All of these synonyms can be used depending on the specific context and substance being removed.