[sahy-kluh-tron, sik-luh-]
noun Physics.
an accelerator in which particles are propelled in spiral paths by the use of a constant magnetic field.

1930–35; cyclo- + -tron Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
cyclotron (ˈsaɪkləˌtrɒn)
a type of particle accelerator in which the particles spiral inside two D-shaped hollow metal electrodes placed facing each other under the effect of a strong vertical magnetic field, gaining energy by a high-frequency voltage applied between these electrodes

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
cyclotron   (sī'klə-trŏn')  Pronunciation Key 

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A type of particle accelerator that accelerates charged subatomic particles, such as protons and electrons, in an outwardly spiraling path, greatly increasing their energies. Cyclotrons are used to bring about high-speed particle collisions in order to study subatomic structures. Compare linear accelerator. See also synchrocyclotron. See Note at particle accelerator.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary
cyclotron [(seye-kluh-tron)]

The first kind of particle accelerator built.

Note: Cyclotrons are now used for special research projects.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
In one experiment, he used four probes to see if he could simulate the alignment of a cyclotron beam.
Cyclotron radiation, synchrotron light or its close relative, bremsstrahlung radiation.
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