Defenition of the word protactinium

• Defenition of the word protactinium

  • Chemical element with symbol Pa and atomic number 91. It is a silvery actinide.
  • a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead

Synonyms for the word protactinium

• • atomic number 91
  • Pa
  • protoactinium

Hypernyms for the word protactinium

• • actinide
  • metal
  • metallic element

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