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протоактиниj, протоактиниjум meaning in English

Serbian-CroatianEnglish
протоактиниj, протоактиниjум noun

protactinium(chemical element)
noun
[UK: ˌprəʊ.tæk.ˈtɪ.niəm] [US: ˌproʊ.tæk.ˈtɪ.niəm]