Hertz (Hz) Unit of measure of the frequency of alternating current. One cycle of oscillation is one Hertz. By Jim Minadeo|2026-04-06T08:53:15-04:0004/02/21|Glossary| Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTelegramTumblrPinterestVkXingEmail About the Author: Jim Minadeo