betatron

from WordNet (r) 3.0 (2006)

betatron
    n 1: accelerates a continuous beam of electrons to high speeds
         by means of the electric field produced by changing
         magnetic flux [syn: {betatron}, {induction accelerator}]

from The Collaborative International Dictionary of English v.0.48

betatron \be"ta*tron\ n.
   a type of particle accelerator which accelerates a continuous
   beam of electrons to high speeds by means of the electric
   field produced by changing magnetic flux.

   Syn: induction accelerator.
        [WordNet 1.5]