plutonium
Pronunciation:
/pluːˈtoʊniəm/noun
Definitions
A sanctuary dedicated to the Ancient Greek and Roman god Pluto, usually at a location producing poisonous emissions, believed to represent an entrance to the underworld.
noun
Definitions
The transuranic chemical element with atomic number 94 and symbol Pu: a silvery-gray radioactive actinide metal that tarnishes when exposed to air.