Meaning of tokamak


Pronunciation: (tō'ku-mak", tok'u-), [key]
— n. Physics.
  1. a type of experimental nuclear fusion reactor in which a plasma of atoms circulates in a toroidal tube and is confined to a narrow beam by an electromagnetic field.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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