अर्थ : ଏକ କୋମଳ ଧାତବ ତତ୍ତ୍ୱ
उदाहरणे :
ପ୍ରୋମେଥିୟମର ପରମାଣୁ ସଂଖ୍ୟା ଏକଷଠି
इतर भाषांमध्ये अनुवाद :
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.
atomic number 61, pm, promethium