su·​per·​het·​ero·​dyne ˌsü-pər-ˈhe-tə-rə-ˌdīn How to pronounce superheterodyne (audio)
: used in or being a radio receiver in which an incoming signal is mixed with a locally generated frequency to produce an ultrasonic signal that is then rectified, amplified, and rectified again to reproduce the sound
superheterodyne noun

Word History


supersonic + heterodyne

First Known Use

1920, in the meaning defined above

Time Traveler
The first known use of superheterodyne was in 1920

Dictionary Entries Near superheterodyne

Cite this Entry

“Superheterodyne.” Dictionary, Merriam-Webster, Accessed 30 May. 2023.

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