superheterodyne

[ soo-per-het-er-uh-dahyn ]
/ ˌsu pərˈhɛt ər əˌdaɪn /
Radio.

adjective

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.

noun

a superheterodyne receiver.

Origin of superheterodyne

First recorded in 1920–25; super(sonic) + heterodyne
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019