a type of cyclotron in which the frequency of the electric field is modulated to allow for relativistic effects at high velocities and thus produce higher energies
synchrocyclotron in American English
(ˌsɪŋkroʊˈsaɪkləˌtrɑn; ˌ sɪnkroʊˈsaɪkləˌtrɑn)
US
noun
a modified cyclotron in which the frequency of the accelerating voltage is modulated to take into account the increase in the relativistic mass of the particle as it reaches high energies