heterodyne

== English == === Etymology === From hetero- +‎ -dyne. === Adjective === heterodyne (not comparable) Of two oscillations: having two slightly different frequencies such that, when combined, they produce a beat === Noun === heterodyne (plural heterodynes) The beat so produced Either the sum or difference of the two oscillations ==== Derived terms ==== === Verb === heterodyne (third-person singular simple present heterodynes, present participle heterodyning, simple past and past participle heterodyned) To produce heterodyne interference in a radio To change the frequency of a signal by such a process