nuclear reactornuclear reactor
a device for initiating and maintaining a controlled nuclear chain reaction in a fissile fuel for the production of energy or additional fissile material
- A device in which nuclear fission initiates a controlled chain reaction, producing heat energy typically used for power generation, and neutrons and fission products often used for military, experimental, and medical purposes. Also called atomic reactor .
- A device, such as a tokamak, in which nuclear fusion takes place in a controlled chain reaction.