selenium rectifier: Meaning and Definition of

sele'nium rec"tifier

Pronunciation: [key]
  1. a rectifier consisting of laminated plates of metal, usually iron, that have been coated with selenium on one side, with rectification taking place because the flow of electrons from the conductive metal to the selenium occurs more readily than the flow in the opposite direction.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.