promethium
pro me thi um |prōˈmēTHēəm prəˈmiːθiəm | ▶noun the chemical element of atomic number 61, a radioactive metal of the lanthanide series. It was first produced artificially in a nuclear reactor and occurs in nature in traces as a product of uranium fission. (Symbol: Pm ) ORIGIN 1940s: modern Latin, from the name of the Titan Prometheus .
promethium |prəˈmiːθɪəm | ▶noun [ mass noun ] the chemical element of atomic number 61, a radioactive metal of the lanthanide series. It was first produced artificially in a nuclear reactor and occurs in nature in traces as a product of uranium fission. (Symbol: Pm ) ORIGIN 1940s: modern Latin, from the name of the Titan Prometheus .
Promethium
Pro me thi um Substantiv, Neutrum Chemie , das |Prom e thium |zu den seltenen Erden gehörendes, radioaktives, fluoreszierendes Metall chemisches Element Pm