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promethium

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noun pro·me·thi·um \-thē-əm\

Definition of promethium

  1. :  a radioactive metallic element of the rare-earth group obtained as a fission product of uranium or from neutron-irradiated neodymium — see element table



Origin and Etymology of promethium

New Latin, from Latin Prometheus


First Known Use: 1948


Medical Dictionary

promethium

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noun pro·me·thi·um \prə-ˈmē-thē-əm\

Medical Definition of promethium

  1. :  a radioactive metallic element of the rare-earth group obtained as a fission product of uranium or from neutron-irradiated neodymium—symbol Pm; see element table




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