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protactinium

/,pr/oU/t/&/k't/I/n/i//@/m/

Definitions, examples, synonyms and antonyms from WordNet 3.0.

noun

  1. a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead

    noun.substance

    Synonyms atomic number 91 pa protoactinium

    Source: WordNet 3.0

Nearby words

prostrationprostyleprosyprosylogismprotégéprotacticprotagonprotagonismprotagonistprotaminprotamineprotandric

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