promethium

noun pro·me·thi·um \ prə-ˈmē-thē-əm \

Definition of promethium

: a radioactive metallic element of the rare-earth group obtained as a fission product of uranium or from neutron-irradiated neodymium — see Chemical Elements Table

Origin and Etymology of promethium

New Latin, from Latin Prometheus


Medical Dictionary

promethium

noun pro·me·thi·um \ prə-ˈmē-thē-əm \

medical Definition of promethium

: a radioactive metallic element of the rare-earth group obtained as a fission product of uranium or from neutron-irradiated neodymium symbol Pm — see Chemical Elements Table

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