brush discharge

noun Electricity.
  1. a type of corona discharge that takes place between two electrodes at atmospheric pressure, characterized by long, branched, luminous streamers of ionized particles.

Origin of brush discharge

First recorded in 1840–50
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British Dictionary definitions for brush discharge

brush discharge

noun
  1. a slightly luminous electrical discharge between points of high charge density when the charge density is insufficient to cause a spark or around sharp points on a highly charged conductor because of ionization of air molecules in their vicinity
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