PROTACTINIUM


Meaning of PROTACTINIUM in English

transcription, транскрипция: [ ˌprəutækˈtɪnɪəm ]

n. Chem. a radioactive metallic element whose chief isotope yields actinium by decay. °Symb.: Pa. [G (as PROTO-, ACTINIUM)]

English main colloquial, spoken dictionary.      Английский основной разговорный словарь.