tokamak

[toh-kuh-mak, tok-uh-]

to·ka·mak

[toh-kuh-mak, tok-uh-]
noun Physics.
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.

Origin:
1960–65; < Russian tokamák, acronym from toroidálʾnaya kámera s aksiálʾnym magnítnym pólem toroidal chamber with an axial magnetic field
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Tokamak is always a great word to know.
So is supercollider. Does it mean:
a very large colliding-beam machine in which superconducting magnets create millions of megavolts of energy
the meeting of particles or of bodies in which each exerts a force upon the other, causing the exchange of energy or momentum
Collins
World English Dictionary
tokamak (ˈtɒkəˌmæk)
 
n
physics a toroidal reactor used in thermonuclear experiments, in which a strong helical magnetic field keeps the plasma from contacting the external walls. The magnetic field is produced partly by current-carrying coils and partly by a large inductively driven current through the plasma
 
[C20: from Russian to(roidál'naya) kám(era s) ak(siál'nym magnitnym pólem), toroidal chamber with magnetic field]

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