redissolve

/ˌriːdɪˈzɑːlv/
verb
  1. To dissolve again; to cause a solid to go back into solution after it has separated or crystallized.
    • If the sugar crystallizes, you can redissolve it by heating the mixture gently.
    • After cooling, the salt formed crystals that would not redissolve in the cold water.
    • The chemist needed to redissolve the precipitate to continue the experiment.
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