HyperDic: atomic_number_61

English > 1 sense of the expression atomic number 61:
NOUNsubstanceatomic number 61, promethium, Pma soft silvery metallic element of the rare earth group having no stable isotope
English > atomic number 61: 1 sense > noun 1, substance
MeaningA soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium.
Synonymspromethium, Pm
Broadermetallic element, metalAny of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
Spanishnúmero atómico 61, promecio, prometio
Catalanprometi

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