heterodyne noun 2verb 2adjective 1forms 3 noun2 •The beat so produced •Either the sum or difference of the two oscillations verb2 •To produce heterodyne interference in a radio •To change the frequency of a signal by such a process adjective1 •Of two oscillations: having two slightly different frequencies such that, when combined, they produce a beat formsheterodyned · heterodyning · heterodynes