Definitions for "Dynode"
an electrode between the photocathode and anode in a photomultiplier device. May be multiple dynodes acting to give an "electron avalanche" effect.
An electrode in an electron tybe that functions to produce secondary emission of electrons.
A dynode is one of a series of electrodes within a photomultiplier tube. Each dynode is more positively charged than its predecessor. Secondary emission occurs at the surface of each dynode.