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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.
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Your going to play your pristine LP on Dad's new Dynatron stereogram...with additional speakers.
Markus Blatt--HPC-Simulation-Software & Services D-Wave Systems Dynatron Corporation E4 Computer Engineering EMC Emulex EPCC, Edinburgh University ETP4HPC European Exascale Projects European Open File System (EOFS) ExaScaler Inc.
However, we take pride in resurrecting quality sound systems by Hacker, Dynatron, Garrard etc, making them available to the vinyl lover at a fraction of the original price.
Spacious therapy/rehabilitation rooms are equipped with the most state-of-the-art equipment, such as Dynatron 950 Plus electrotherapy/ultrasound unit and a NuStep TRS 400 recumbent bike to help restore patients to maximum functional independence as quickly as possible.