| NOUN | substance | promethium, Pm, atomic number 61 | a soft silvery metallic element of the rare earth group having no stable isotope |
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| Sounds | prahmiy'thiyahm | |
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| Rhymes | abolitionism ... zirconium: 557 rhymes with ahm... | |
| Meaning | A soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium. | |
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| Synonyms | Pm, atomic number 61 | |
| Broader | metallic element, metal | Any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
| Spanish | número atómico 61, promecio, prometio | |
| Catalan | prometi | |
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