A person who responds to a suggestion, stimulation or other influence. / (chemistry, engineering) A structure used to contain chemical or other reactions.

plural of reactor

(nuclear physics, engineering) A nuclear reactor with no moderator, using fast neutrons directly in a controlled fission chain reaction without slowing them down; this allows for a much more compact reactor, and causes the reactor to use fissile material much more efficiently, and to generate larger quantities of high-energy neutrons which can be used for breeding more fissile material or producing other useful radioactive nuclides, but requires the use of highly-enriched uranium (at least 20% uranium-235) or other fuel containing a similarly high concentration of fissile material.

plural of fast reactor

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.