/sooh'peuhr het"euhr euh duyn'/ , 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.
2. a superheterodyne receiver.
[ 1920-25; SUPER(SONIC) + HETERODYNE ]