Cite
 

Meaning of tokamak

to•ka•mak

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.
See also: