protactinium

Definitions

  • WordNet 3.6
    • n protactinium a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
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Usage


In science:

Discovery of actinium, thorium, protactinium, and uranium isotopes.
Discovery of the actinium, thorium, protactinium, and uranium isotopes
Morris reflected on the discovery and naming of protactinium .
Discovery of the actinium, thorium, protactinium, and uranium isotopes
Fig. 4: Protactinium isotopes as a function of time when they were discovered.
Discovery of the actinium, thorium, protactinium, and uranium isotopes
Tagen.” [[The figure] shows the decay curves of the separated protactinium samples.
Discovery of the actinium, thorium, protactinium, and uranium isotopes
Discovery of actinium, thorium, protactinium, and uranium isotopes.
Discovery of the actinium, thorium, protactinium, and uranium isotopes
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