\ ˈhərts How to pronounce hertz (audio) , ˈherts How to pronounce hertz (audio) \
plural hertz

Definition of hertz

 (Entry 1 of 3)

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


biographical name (1)
\ ˈherts How to pronounce Hertz (audio) , ˈhərts \

Definition of Hertz (Entry 2 of 3)

Gustav Ludwig 1887–1975 German physicist


biographical name (2)

Definition of Hertz (Entry 3 of 3)

Heinrich Rudolf 1857–1894 German physicist

Examples of hertz in a Sentence

Recent Examples on the Web: Noun In their latest experiment, André and his colleagues used a loudspeaker to blare tanks of Neptune grass with a dynamic mix of artificial sounds with frequencies from 50 to 400 hertz, spanning the range typically associated with human activity. Ashley Braun, Smithsonian Magazine, 27 July 2021 As the object got closer, the snake jumped from a low-frequency rattle of around 40 hertz to one closer to 70 hertz, according to Science’s Rachel Fritts. Corryn Wetzel, Smithsonian Magazine, 24 Aug. 2021 The camera and monitor are paired from the factory using 2.4G hertz direct communication. Jim Rossman, Dallas News, 20 May 2021 William Jason Raynovich has returned for residencies four times to perfect the instrument, right down to the hertz. Arkansas Online, 15 July 2021 In 1989, an underwater sonar system developed and utilized by the U.S. Navy captured the unique biological sonic signature of a whale registering at 52 hertz of frequency, which is unlike any other whale song. Tribune News Service, cleveland, 9 July 2021 Vibrations from construction machinery jump up past 100 hertz. Matt Simon, Wired, 28 June 2021 Cats purr with a frequency between 25 and 150 hertz, and sounds within this range can improve bone density and promote healing. Mckenzie Sadeghi, USA TODAY, 25 Feb. 2021 The system stayed below 60 hertz for longer than 4 minutes until Ercot ordered additional blackouts. Russell Gold, WSJ, 24 Feb. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hertz.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of hertz


circa 1928, in the meaning defined above

History and Etymology for hertz


Heinrich R. Hertz

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The first known use of hertz was circa 1928

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Last Updated

17 Sep 2021

Cite this Entry

“Hertz.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hertz. Accessed 25 Sep. 2021.

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More Definitions for hertz



English Language Learners Definition of hertz

: a unit used for measuring the frequency of sound waves


\ ˈhərts How to pronounce hertz (audio) , ˈherts How to pronounce hertz (audio) \

Medical Definition of hertz

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

More from Merriam-Webster on hertz

Nglish: Translation of hertz for Spanish Speakers

Britannica.com: Encyclopedia article about hertz


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