WordReference Random House Learner's Dictionary of American English © 2025
WordReference Random House Unabridged Dictionary of American English © 2025
meg•a•cy•cle
(meg′ə sī′kəl),USA pronunciation n.
- Electricitya unit of frequency, equal to one million cycles per second;
megahertz. The term megahertz is now preferred in technical use. Abbr.: Mc, mc
- mega- + cycle 1925–30
'megacycle' also found in these entries (note: many are not synonyms or translations):