(plural hertz), abbreviation Hz (plural Hz) [noun] [C] - a unit for measuring the number of times something happens every second, esp. in electronicsAdults usually cannot hear sound of a frequency greater than about 20 000 Hz.See also kilohertz; megahertz.
HERTZ
Meaning of HERTZ in English
Cambridge English vocab. Кембриджский английский словарь. 2012