tokamak

English Thesaurus

1. a doughnut-shaped chamber used in fusion research; a plasma is heated and confined in a magnetic bottle (noun.artifact)

hypernym	:	chamber,
definition	:	a natural or artificial enclosed space (noun.artifact)

part holonym	:	magnetic bottle,
definition	:	container consisting of any configuration of magnetic fields used to contain a plasma during controlled thermonuclear reactions (noun.artifact)