DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   reactor
       n 1: an electrical device used to introduce reactance into a
            circuit
       2: (physics) any of several kinds of apparatus that maintain and
          control a nuclear reaction for the production of energy or
          artificial elements [syn: nuclear reactor, reactor]