ɐ haɪdɹˈeɪɾᵻd fˈɔːɹm ʌvðɪ ˈɑːksaɪd wˌɪtʃ dɪsˈɑːlvz ɪn ˈæsɪd kæn biː pɹɪpˈɛɹd baɪ pɹɪsˌɪpɪtˈeɪʃən fɹʌm səlˈuːʃən, fɔːɹ ɛɡzˈæmpəl, baɪ haɪdɹˈɑːləsˌɪs ʌv pɐlˈeɪdiəm nˈaɪtɹeɪt ɔːɹ ɹɪˈækʃən əvə sˈɑːljuːbəl pɐlˈeɪdiəm kˈɑːmpaʊnd wɪð ɐ stɹˈɔŋ bˈeɪs.
A hydrated form of the oxide (which dissolves in acid) can be prepared by precipitation from solution, for example, by hydrolysis of palladium nitrate or reaction of a soluble palladium compound with a strong base.