Answer: nuclear

AnswerCrossword Clue
NUCLEAR... physics.
nuclearpertaining to a nucleus (an essential part of a cell)
nuclearpowered by nuclear energy
nuclearof or involving atomic weapons
nuclearof or forming a nucleus
NUCLEARKind of fusion or fission
NUCLEARKind of power plant
NUCLEARKind of family
NUCLEARWord with family or winter
NUCLEARKind of fission
NUCLEARDesignating a type of power.
NUCLEARDesignating a form of energy.
NUCLEARAtomic
NUCLEARHarold Urey's type of physics.
NUCLEARLike some potentially hazardous plants
NUCLEARLike some power
NUCLEARLike some families
NUCLEARPart of NRC
NUCLEAROf fission or fusion
NUCLEARKind of medicine
NUCLEARKind of freeze
NUCLEARLike some subs
NUCLEARCore, as family