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[dahy-nohd] /ˈdaɪ noʊd/
noun, Electronics.
an electrode for the emission of secondary electrons in a vacuum tube.
Origin of dynode
1935-40; dyn(a)- + -ode2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for dynode
  • Electron accelerated to next dynode, liberates more electrons.
  • The average number of electrons emitted by a dynode is linearly proportional to the potential difference between dynodes.
  • The avalanche ends at the last dynode, where an electron pulse that is millions of times larger than it was at the beginning.
  • It comes complete with a photomultiplier tube, dynode chain and connecting cable.
  • Resolution determined by smallest number of quanta in chain, ie number of photoelectrons arriving at first dynode.
  • They have been triggering independently from dynode thresholds settings.
  • The detector system must consist of a single discrete dynode ion-counting electron multiplier or equivalent.
British Dictionary definitions for dynode


an electrode onto which a beam of electrons can fall, causing the emission of a greater number of electrons by secondary emission. They are used in photomultipliers to amplify the signal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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dynode in Science
An electrode used in certain electron tubes, especially photomultipliers, to provide secondary emission. Dynodes are arranged by increasing voltage between the cathode and anode of the tube, each attracting the cascade of electrons from the one behind it, and releasing more electrons to the next.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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