1. Noun.  (physics) a torus-shaped reactor used in the mid-20th Century to carry out experiments in plasma physics and temperature controlled thermonuclear reactions.
  2. Proper noun.  A medieval state roughly equivalent to modern Montenegro.
  3. Noun.  The name of the sixth letter of the modern Greek alphabet ((term, Ζ) , (term, ζ) ) preceded by epsilon ((term, Ε) , (term, ε) ) and followed by eta, ((term, Η) , (term, η) ); or the seventh letter in the ancient Greek alphabet, in which it is preceded by digamma ((term, Ϝ) , (term, ϝ) ).
  4. Noun.  (mathematics) A mathematical function formally known as the Riemann zeta function.

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This entry was last updated on RefTopia from its source on 3/20/2012.