A nuclear reactor that generates more fissile material than it consumes.

an iron-core inductor whose inductance may be changed by varying the permeability of the core; used to control large alternating currents such as in theatre light dimmers

An automatic safety feature of nuclear reactors where the control rods are automatically dropped into the reactor core when any of several emergency conditions are reached.

(chemistry) any vessel designed to hold the compounds involved in a chemical reaction; a reaction vessel

(physics) Any device in which a controlled chain reaction is maintained for the purpose of creating heat (for power generation) or for creating neutrons and other fission products for experimental, medical or other purposes.

plural of hot reactor

(psychology, physiology) A person whose blood pressure and heart rate increase abnormally in response to stress.

plural of fast-neutron reactor

A nuclear plant which produces fissionable material from high-energy neutrons as a byproduct in excess of the amount it uses to operate.

A form of nuclear power plant in which heat from the reactor is transferred via a continuous flow of pressurized water