plural hertz
: a unit of frequency equal to one cycle per second
abbreviation Hz

Examples of hertz in a Sentence

Recent Examples on the Web
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The settings can be adjusted to tweak a 10-band equalizer with frequencies from 50 hertz to 1,200 hertz. Keenan Thompson, Freep.com, 15 Dec. 2025 The options are typically 60, 120, and 144 hertz. Clint Davis, PEOPLE, 28 Nov. 2025 According to Adam Pascale, chief scientist at the Seismology Research Centre, the concert registered in the 2-5 hertz range at their office in Richmond, some 2 miles from the concert at the towering MCG. Lars Brandle, Billboard, 13 Nov. 2025 Recent experiments have already narrowed that to 300 kilohertz, and upcoming work could shrink it further to hundreds of hertz. New Atlas, 16 Sep. 2025 See All Example Sentences for hertz

Word History

Etymology

Heinrich R. Hertz

First Known Use

circa 1928, in the meaning defined above

Time Traveler
The first known use of hertz was circa 1928

Browse Nearby Words

Cite this Entry

“Hertz.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hertz. Accessed 19 Dec. 2025.

Kids Definition

: a unit of frequency equal to one cycle per second
abbreviation Hz

Medical Definition

hertz

noun
: a unit of frequency equal to one cycle per second
abbreviation Hz

Biographical Definition

Hertz 1 of 2

biographical name (1)

Gustav Ludwig 1887–1975 German physicist

Hertz

2 of 2

biographical name (2)

Heinrich Rudolf 1857–1894 German physicist

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