| NOM | substance | protoactinium, protactini, protactinio, protoactini | a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead |
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| Sentit | A short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead. | |
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| Sinònims | protactini, protactinio, protoactini | |
| General | element metàl·lic, metall | Any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
| Anglès | protactinium, protoactinium, Pa, atomic number 91 | |
| Espanyol | número atómico 91, protactinio, protoactinio, protoactinium | |
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