thermonuclear reactor(n = noun.artifact) fusion reactor - a nuclear reactor that uses controlled nuclear fusion to generate energy;
is a kind of nuclear reactor, reactor

atomic reactor, boiling water reactor, breeder reactor, chain reactor, chemical reactor, fast reactor, fusion reactor, gas-cooled reactor, liquid metal reactor, nuclear reactor, power reactor, pressurized water reactor, reactor, thermal reactor, thermonuclear, thermonuclear bomb, thermonuclear reaction, thermonuclear warhead, water-cooled reactor