Meaning of electrostatic precipitator

electrostat'ic precip'itator

Pronunciation: [key]
  1. a device for removing small particles of smoke, dust, oil, etc., from air by passing the air first through an electrically charged screen that gives a charge to the particles, then between two charged plates where the particles are attracted to one surface.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.