See also: mega-cycle English Etymology From mega- + cycle. Noun megacycle (plural megacycles) (dated) Synonym of megahertz Translations megahertz Greek: μεγάκυκλος (el) m (megákyklos) Italian: megaciclo (it) m, megahertz (it) m Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads