English
Detailed Synonyms for protactinium in English
protactinium:
protactinium [the ~] noun
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the protactinium
– a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead 1the protoactinium; the Pa; the atomic number 91; the protactinium– a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead 1