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tokamak
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tokamak
to·ka·mak  audio  (tôk-mk, tk-) KEY 

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

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



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