From roz- +‎ puszczać.

• IPA^(key): /rɔsˈpuʂ.t͡ʂat͡ɕ/

• Audio:

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• Rhymes: -uʂt͡ʂat͡ɕ
• Syllabification: roz‧pusz‧czać

rozpuszczać impf (perfective rozpuścić)

1. (transitive) to dissolve, to make into a solution
2. (transitive) to melt

   Synonym: roztapiać

3. (transitive, of hair) to untie, to undo, to let down
4. (transitive) to overindulge, to spoil
5. (transitive, colloquial) to set free, to let loose
6. (transitive, colloquial) to blow (e.g. money), to fritter

   Synonyms: roztrwaniać, przepuszczać

7. (reflexive with się) to dissolve
8. (reflexive with się) to melt (become liquid)
9. (reflexive with się, of hair) to come loose, to come undone

• rozpuszczać in Wielki słownik języka polskiego, Instytut Języka Polskiego PAN
• rozpuszczać in Polish dictionaries at PWN