Nuclear power.
Nuclear weapon
Involving an extreme course of action.
Pertaining to the nucleus of a cell.
Relating to a weapon that derives its force from rapid release of energy through nuclear reactions.
Involving energy released by nuclear reactions (fission, fusion, radioactive decay).
Pertaining to the nucleus of an atom.
The energy released by a nuclear reaction; either through nuclear fission or nuclear fusion
Such energy used as a power source.