1. The unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)
   "The human ear can typically hear sounds between 20 and 20,000 cycles/second";
   - hertz, Hz, cycle per second, cps, cycle, cycles per second

Type of: rate

Part of: kc, kHz, kilocycle, kilocycle per second, kilohertz