Definition of "klystron" []

• An electron tube used to amplify or generate ultrahigh frequency by means of velocity modulation. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Working at Columbia University, he and graduate student James Gordon built a contraption in which a generator called a klystron, emitting radiation at microwave frequencies, excites a beam of ammonia molecules."
• "The electron microscope is one, the klystron, which supplies power to radar systems another."
• "To do so they combined the positive aspects of a magnetron (its high power output) and of a klystron tube (a device that used resonant cavities to amplify microwaves)."