DictionaryhertzFrequency unit
noun

hertz

HURTS/hɜːrts/

A unit of frequency equal to one cycle per second.

The waveform repeats once per second, showing a frequency of one hertz.

A benchtop oscilloscope displays exactly one complete sinusoidal cycle between time markers labeled “0 s” and “1 s,” making one cycle per second visibly countable.
Etymology

Hertz commemorates the German physicist Heinrich Hertz. The name serves as a scientific unit label for one cycle per second rather than literally describing frequency.

In context

AtomicSchool3:25
Hertz is the unit of frequency and it just means waves per second it's usually shortened to Hz
Physics Waves: Frequency & Wavelength FREE Science Lesson

More examples

  • A light flashing once per second flashes at one hertz.
  • Household alternating current in the United States runs at 60 hertz.
  • This monitor refreshes its display at 144 hertz.

Forms

hertz

kilohertz noun — A frequency unit equal to 1,000 hertz.

megahertz noun — A frequency unit equal to 1,000,000 hertz.