syn·chro·cy·clo·tron (sĭngkrō-sīklə-trŏn, sĭn-)
n.
A cyclotron that accelerates protons and positive ions by using frequency modulation to synchronize the phase of the accelerating potential with the frequency of the accelerated particles to compensate for relativistic increases in particle mass at high speeds.

[TahlilGaran] American Dictionary ▲