dynatron
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dy·na·tron
(dī′nə-trŏn′)n.
A tetrode with grid and plate potentials so arranged that plate current decreases when plate potential increases.
[Greek dunamis, power; see dynamic + -tron.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.