I. |süpə(r)+ adjective
Etymology: super sonic + heterodyne
: of or relating to a form of beat reception in which beats are produced of a frequency above audibility but below that of the received signals and the current of the beat frequency is then rectified, next amplified, and finally rectified again so as to reproduce the sound in a telephone receiver — compare heterodyne
II. noun
1. : superheterodyne reception
2. : a radio set which receives superheterodyne reception
III. transitive verb
: to handle (radio signals) by superheterodyne methods