nuclear fusion

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Related to Fusion reaction: Fission reaction

nu·cle·ar fu·sion

the formation of more complex atomic nuclei from less complex nuclei with release of energy, as in the formation of helium nuclei from hydrogen nuclei (hydrogen fusion).

nuclear fusion

Joining of the nucleus of small atoms to form larger atoms. It occurs when temperatures reach millions of degrees. An example is the nuclear reaction joining hydrogen together to form helium and resulting in the significant release of energy.
See also: fusion


1. the act or process of melting.
2. the merging or coherence of adjacent parts or bodies.
3. the operative formation of an ankylosis or arthrosis.

diaphyseal-epiphyseal fusion
operative establishment of bony union between the epiphysis and diaphysis of a bone.
nerve fusion
nerve anastomosis done to induce regeneration for resupplying empty tracts of a nerve with new growth of fibers.
nuclear fusion
the fusion of two atomic nuclei to form a single heavier nucleus, resulting in the release of enormous amounts of energy.
spinal fusion
surgical creation of ankylosis between contiguous vertebrae; spondylosyndesis.
References in periodicals archive ?
This is crucial because if too many particles escape, the fuel could cool to the point where fusion reactions cease.
5 billion National Ignition Facility have now triggered fusion reactions that briefly sustain themselves.
A consortium of scientists  comprising International Thermonuclear Experimental Reactor, a nuclear fusion project, have given themselves about half a century to create a controlled nuclear fusion reaction.
8 ( ANI ): Researchers from National Ignition Facility have revealed that they are a lot more closer to igniting a self-sustained fusion reaction with high yields of energy, a feat likened to creating a miniature star on Earth.
Thiago says he achieved his fusion reaction by creating a vacuum in a steel chamber, filling it with deuterium gas - a form of hydrogen - then bombarding the gas with 40,000 volts of electricity.
It is the Task Force's view that the threshold scientific question--namely, whether a fusion reaction producing sufficient net energy gain to be attractive as a commercial power source can be sustained and controlled--can and will be solved.
Yet except in nuclear weapons, scientists have never produced a fusion reaction that does that.
But it is critical to the fusion reaction that powers the Sun.
Priority one is ITER, an international collaboration to build the first fusion science experiment capable of producing a self-sustaining fusion reaction, called a 'burning plasma.
In the ITER reactor, the blanket system will surround the fusion plasma and convert the fusion power into heat, will breed any fuel that may be needed for sustaining the plasma, and will shield personnel and sensitive components from fusion reaction products.
He asserted that a Fukushima-like accident is impossible at Iter as the fusion reaction is fundamentally safe and any disturbance from ideal conditions and the reaction will stop, adding that a runaway nuclear reaction and a core meltdown are simply not possible.