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Promethium
//pɹoʊˈmiːθiəm// noun
Definitions
Noun
- 1 A metallic chemical element (symbol Pm) with an atomic number of 61. uncountable
- 2 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 wordnet
Etymology
1945. From the name of the Greek god Prometheus, who stole the fire from Mount Olympus and brought it down to mankind + -ium.
See also for "promethium"
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