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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Nuclear device 7 letters:

REACTOR: Nuclear device
REACTOR: Nuclear energy device
ATOMSMASHER: Nuclear device
HBOMB: Nuclear device
REACTORS: Nuclear devices
ATOM: With 41-Down, nuclear device
PHOTOMULTIPLIERS: Nuclear-physics devices
ICBM: Nuclear weapon delivery device, for short