reactor

/ri:'æktə/
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reactor

A technician monitors the reactor's control panel.

Definition
  1. Noun:
    • A device or structure in which a controlled nuclear chain reaction is maintained, used for generating power, producing radioactive isotopes, or for research. This is the most common meaning, referring to nuclear technology.
    • An electrical device that introduces reactance (a type of opposition to alternating current) into a circuit. This is a technical meaning used in electrical engineering.
Usage and Examples
  • Noun (Nuclear):

    • The power plant's reactor generates electricity for over a million homes.
    • Scientists are studying the core of the experimental reactor.
    • After the accident, the damaged reactor was encased in a concrete shelter.
  • Noun (Electrical):

    • The engineer installed a reactor in the circuit to limit the fault current.
    • Inductive reactors are used to control power flow in transmission lines.
Advanced Usage
  • "to go critical": When a nuclear reactor achieves a self-sustaining chain reaction.

    • The research reactor went critical for the first time yesterday.
  • "breeder reactor": A type of nuclear reactor that creates more fissile material than it consumes.

    • The breeder reactor is designed to produce fuel while generating power.
Variants and Related Words
  • Nuclear reactor (n phrase): The full term for the apparatus that sustains a nuclear chain reaction.

    • The country is investing in next-generation nuclear reactor designs.
  • Reactor core (n phrase): The central part of a nuclear reactor containing the fuel and where the fission reaction takes place.

    • The temperature in the reactor core must be carefully controlled.
  • Chemical reactor (n phrase): A vessel designed to contain chemical reactions. (Note: This is a related but distinct compound term).

    • The new chemical reactor allows for safer production of pharmaceuticals.
Synonyms
  • Nuclear pile (archaic): An early term for a nuclear reactor.
  • Atomic pile (archaic): Similar to nuclear pile.
  • Inductor (for electrical sense): A device that provides inductance, a specific type of reactance.
Related Phrases and Compounds
  • Fast reactor: A reactor using fast neutrons.
  • Thermal reactor: A reactor using thermal (slow) neutrons.
  • Pressurized water reactor (PWR): A common type of power reactor.
  • Fusion reactor: An experimental device aimed at producing energy by nuclear fusion.
reactor

A technician monitors the reactor's control panel.

Noun
  1. (physics) any of several kinds of apparatus that maintain and control a nuclear reaction for the production of energy or artificial elements
  2. an electrical device used to introduce reactance into a circuit