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Related to electric precipitator: Electrostatic precipitator
A device installed in flues, and the like, to prevent smoke and dust particles from escaping to the atmosphere; the particles are given an electric charge as they pass through a charged screen; then they are attracted to one of two electrically charged plates through which they pass; from time to time they are removed from the plates.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.