Meaning of superheterodyne

su•per•het•er•o•dyne

Pronunciation: (s"pur-het'ur-u-dīn"), [key]
— Radio. Radio.
—adj.
  1. denoting, pertaining to, or using a method of processing received radio or video signals in which an incoming modulated wave is changed by the heterodyne process into a lower-frequency wave and then subjected to amplification and subsequent detection.
—n.
  1. a superheterodyne receiver.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.