Source of Energy for Nuclear Weapons
This page is the CodyCross answer for the clue below from Culinary Arts, Group 128, Puzzle 4 (Ground Beef).
Question is: Source of Energy for Nuclear Weapons
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.