hertz; Hz
The SI unit of frequency, equal to one cycle per second. Used in physics, engineering, and everyday contexts such as audio and radio frequencies.
This sound is 440 hertz.
CPUのクロック周波数は3.2ギガヘルツだ。
The CPU clock speed is 3.2 gigahertz.
From German 'Hertz', named after the physicist Heinrich Hertz. Borrowed into Japanese as ヘルツ.