protoactinium meaning and definition

Definition and meaning of protoactinium at MeaningMonkey.org. protoactinium meaning and definition in the English Dictionary.

PROTOACTINIUM noun

Definition of protoactinium (noun)

a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
- synonyms: atomic number 91, Pa, protactinium

Source: Princeton University Wordnet

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