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protoactinium

2 senses · Free VividLex dictionary · Thesaurus

1. n. a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead Source: wordnet
2. n a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead Source: ecdict

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From the definitions

actinium disintegrating element formed lead metallic radioactive short-lived uranium

Word family

Proto-Indo European language Proto-Inupik Proto-Japonic Proto-Norse Proto-Norse language proto-oncogene proto-oncogenes proto-racism proto-racist proto-Reformation protoanthropology protoarchaeology protoarcheology protoavis protocanonical

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