Definitions for "Tokamak"
tokamak is the Russian name given to a large, doughnut-shaped fusion device that is surrounded by electrical coils which produce intense magnetic fields to confine a hot, D-T fuel plasma.
a doughnut-shaped chamber used in fusion research; a plasma is heated and confined in a magnetic bottle
an axisymmetrical toroidal vacuum chamber in which plasma is contained and brought to extremely high temperatures by means of interacting electrical and magnetic fields