Nuclear Weapon Element
This page is the CodyCross answer for the clue below from Casino, Group 272, Puzzle 5 (Direction of Play).
Question is: Nuclear Weapon Element
and the answer is: PLUTONIUM
Word Meaning:
PLUTONIUM — The transuranic chemical element with atomic number 94 and symbol Pu: a silvery-gray fissile radioactive actinide metal that tarnishes when exposed to air.
Definitions from Wiktionary.