
1) Energy conversion 2) Power station technology
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A nuclear reactor is a device to initiate and control a sustained nuclear chain reaction. Nuclear reactors are used at nuclear power plants for electricity generation and in propulsion of ships. Heat from nuclear fission is passed to a working fluid (water or gas), which runs through turbines. These either drive a ship`s propellers or turn electr....
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http://en.wikipedia.org/wiki/Nuclear_reactor

An apparatus that contains a controlled nuclear chain reaction and can capture a portion of the energy as heat or mechanical work.
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http://needtoknow.nas.edu/energy/glossary/

any of a class of devices that can initiate and control a self-sustaining series of nuclear fissions. Such devices are used as research tools, as ... [15 related articles]
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http://www.britannica.com/eb/a-z/n/61

A system in which controlled nuclear fisson reactions generate heat energy on a large scale, which is subsequently converted into electrical energy.
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http://www.chemistry-dictionary.com/definition/nuclear+reactor.php

Nuclear reactor principle Credit: European Nuclear Society An assembly in which a nuclear fission chain reaction is maintained and controlled for the production of nuclear energy, radioactive isotopes, or artificial elements. The nuclear fuel used in a reactor consists of fissile material (e.g...
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http://www.daviddarling.info/encyclopedia/N/nuclear_reactor.html

device containing fissionable material in sufficient quantity and so arranged as to be capable of maintaining a controlled self-sustaining nuclear chain reaction
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=393-15-01

A device in which nuclear fission can be sustained in a self-supporting chain reaction involving neutrons. In thermal reactors, fission is brought about by thermal neutrons.
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http://www.encyclo.co.uk/local/20474

A device in which a nuclear fission chain reaction occurs under controlled conditions so that the heat yield can be harnessed or the neutron beams utilised. All commercial reactors are thermal reactors, using a moderator to slow down the neutrons
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http://www.encyclo.co.uk/local/20725

A system in which controlled nuclear fisson reactions generate heat energy on a large scale, which is subsequently converted into electrical energy.
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http://www.encyclo.co.uk/local/20728

An engineering construction in which a nuclear fission chain reaction occurs under controlled conditions so that the heat yield can be harnessed or the neutron beams utilised. All commercial reactors to date are thermal reactors, using a moderator to slow down the neutrons.
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http://www.encyclo.co.uk/local/20841

A device in which a nuclear fission chain reaction occurs under controlled conditions so that the heat yield can be harnessed or the neutron beams utilised. All commercial reactors are thermal reactors, using a moderator to slow down the neutrons.
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http://www.encyclo.co.uk/local/21076

A facility where a nuclear fission chain reaction can be initiated, controlled, and sustained.
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http://www.encyclo.co.uk/local/22392

A device in which a nuclear fission chain reaction occurs under controlled conditions so that the heat yield can be harnessed or the neutron beams utilised. All commercial reactors are thermal reactors, using a moderator to slow down the neutrons.
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It is the central component of a nuclear power station that generated nuclear energy under controlled conditions for use as a source of electrical power.
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[
n] - (physics) any of several kinds of apparatus that maintain and control a nuclear reaction for the production of energy or artificial elements
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http://www.webdictionary.co.uk/definition.php?query=nuclear%20reactor
reactor noun (physics) any of several kinds of apparatus that maintain and control a nuclear reaction for the production of energy or artificial elements
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https://www.encyclo.co.uk/local/20974

Device for producing nuclear energy in a controlled manner. There are various types of reactor in use, all using nuclear fission. In a gas-cooled reactor, a circulating gas under pressure (such as carbon dioxide) removes heat from the core of the reactor, which usually contains natural uranium. T...
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https://www.encyclo.co.uk/local/21221

An apparatus in which a nuclear fission chain reaction can be initiated, controlled, and sustained at a specific rate. A reactor includes fuel (fissionable material), moderating material to control the rate of fission, a heavy-walled pressure vessel to house reactor components, shielding to protect personnel, a system to conduct heat away from the ...
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https://www.encyclo.co.uk/local/22734

reactor (def. 4). Also called
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https://www.infoplease.com/dictionary/nuclear-reactor

A device in which a nuclear fission chain reaction occurs under controlled conditions so that the heat yield can be harnessed or the neutron beams utilised. All commercial reactors are thermal reactors, using a moderator to slow down the neutrons.
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https://www.world-nuclear.org/nuclear-basics/glossary.aspx
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