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Definition of reactor
1 (also nuclear reactor) an apparatus or structure in which fissile material can be made to undergo a controlled, self-sustaining nuclear reaction with the consequent release of energy. a container or apparatus in which substances are made to react chemically, especially one in an industrial plant. 2 Medicine a person who shows an immune response to a specific antigen or an adverse reaction to a drug or other substance. 3 Physics a coil or other component that provides reactance in a circuit.
Remember that the ending of reactor
is spelled -or