The American Heritage® Dictionary of the English Language, 4th Edition
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.
n. A particle accelerator like a cyclotron, but which operates at variable frequency to account for the particles gaining energy, allowing for greater energies to be achieved.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. cyclotron that achieves relativistic velocities by modulating the frequency of the accelerating electric field
Word Usage
"The largest synchrocyclotron still in use is located in Gatchina outside St Petersburg and it accelerates protons to a kinetic energy of 1,000 MeV."