promethium
noun/prəˈmiːθiəm/
/prəˈmiːθiəm/
[uncountable] (symbol Pm)
- a chemical element. Promethium is a radioactive metal that was first produced artificially in a nuclear reactor and is found in small amounts in nature.Word Origin1940s: modern Latin, from the name of the Titan Prometheus, a demigod in Greek mythology who was worshipped by craftsmen.
Definitions on the go
Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.
Check pronunciation:
promethium