promethium
Pronunciation: prō-mē′thē-ŭm
Definition: A radioactive element of the rare earth series, atomic no. 61; first chemically identified in 1945; 145Pm has the longest known half-life (17.7 years).
[Prometheus, a Titan of G. myth who stole fire to give to mortals]
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Examples: glitazone, GI cocktail, etc.

