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

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

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

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

chamber   

air-cooling    non-inductive    thermo-    200-foot    thermostatic    50-foot    mainspring    gyratory    sparge    weltering