Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A doughnut-shaped chamber used in fusion research in which a plasma is heated and confined by magnetic fields.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A toroidal chamber in which a plasma is magnetically confined; used in nuclear fusion research.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a doughnut-shaped chamber used in fusion research; a plasma is heated and confined in a magnetic bottle

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Russian, from to(roidal'naya) kam(era s) ak(sial'nym magnitnym polem), toroidal chamber with axial magnetic field.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

A transliteration of Russian токамак, an acronym of тороидальная камера в магнитных катушках (toroidal chamber with magnetic coils).

Examples

  • The word tokamak means "toroidal chamber" in Russian.

    Nuclear fusion power

  • The CFNS is based on a tokamak, which is a machine with a "magnetic bottle" that is highly successful in confining high temperature more than 100 million°C fusion plasmas for sufficiently long times.

    Nuclear Fusion-Fission Hybrid Saves The Future

  • The CFNS is based on a tokamak, which is a machine with a "magnetic bottle" that is highly successful in confining high temperature more than 100 million°C fusion plasmas for sufficiently long times.

    Archive 2009-01-01

  • Nuclear fusion entails forcing together the nuclei of light atomic elements in a super-heated plasma, held in a doughnut-shaped chamber called a tokamak, so that they make heavier elements and in so doing release energy.

    PhysOrg.com - latest science and technology news stories

  • Nuclear fusion entails forcing together the nuclei of light atomic elements in a super-heated plasma, held in a doughnut-shaped chamber called a tokamak, so that they make heavier elements and in so doing release energy.

    PhysOrg.com - latest science and technology news stories

  • Nuclear fusion entails forcing together the nuclei of light atomic elements in a super-heated plasma, held in a doughnut-shaped chamber called a tokamak, so that they make heavier elements and in so doing release energy.

    Energy News - Energy Technology - Energy Business - Energy and the Environment

  • A tokamak is a doughnut-shaped vessel in which researchers use powerful magnet fields to squeeze and heat a plasma of hydrogen isotopes until the nuclei fuse together forming helium and releasing large amounts of heat.

    News

  • Nuclear fusion entails forcing together the nuclei of light atomic elements in a super-heated plasma, held in a doughnut-shaped chamber called a tokamak, so that they make heavier elements and in so doing release energy.

    PhysOrg.com - latest science and technology news stories

  • Nuclear fusion entails forcing together the nuclei of light atomic elements in a super-heated plasma, held in a doughnut-shaped chamber called a tokamak, so that they make heavier elements and in so doing release energy.

    PhysOrg.com - latest science and technology news stories

  • A tokamak, which is what ITER will be, is basically a D-shaped car tire.

    reddit.com: what's new online!

Comments

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  • Toroidal'naya kamera s magnitnymi katushkami, accorting to Wikipedia.

    This is a truly beautiful device. The torus is a recurring shape in nature. I think our own inventions will ultimately follow, ever more closely, the shapes and forms of nature's, and be better for it.

    August 26, 2008

  • "ITER is based on the 'tokamak' concept of magnetic confinement, in which the plasma is contained in a doughnut-shaped vacuum vessel. The fuel—a mixture of Deuterium and Tritium, two isotopes of Hydrogen—is heated to temperatures in excess of 150 million°C, forming a hot plasma. Strong magnetic fields are used to keep the plasma away from the walls; these are produced by superconducting coils surrounding the vessel, and by an electrical current driven through the plasma."

    --from http://www.iter.org/mach

    January 19, 2012