Meaning

verb combine (a radio frequency wave) with a locally generated wave of a different frequency so as to produce a new frequency equal to the sum or the difference between the two

adjective of or relating to the beat produced by heterodyning two oscillations

originEtymology tree Proto-Indo-European *sem- Proto-Indo-European *sḿ̥teros Proto-Hellenic *hə́teros Ancient Greek ἕτερος (héteros)lbor. English hetero- English -dyne English heterodyne From hetero- + -dyne.

Etymology from Wiktionary, CC BY-SA 3.0