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If your favorite AM radio station has a frequency of 680 kilohertz (kHz), that means the station's transmitter is oscillating (vibrating) at a rate of 680,000 cycles per second (i.e., 680,000 times a second). A related term is megahertz (MHz), meaning "millions of cycles per second". Shortwave radio operates between 5.9 and 26.1 MHz, and the FM radio band operates between 88 and 108 MHz. Garage-door openers work at about 40 MHz, baby monitors work at 49 MHz, and so on. The terms hertz, kilohertz and megahertz honor the great German physicist Heinrich Hertz, the first person to broadcast and receive radio waves.
Examples of kilohertz in a Sentence
New Atlas, 16 Sep. 2025
Long derided for its poor audio quality, the streaming service will start offering tracks in up to 24-bit and 44.1 kilohertz (kHz) FLAC beginning today, with more markets getting the feature in the coming weeks.
—Nina Corcoran, Pitchfork, 10 Sep. 2025
An external impedance spectroscope sends a low-frequency stimulus (between 10 and 250 kilohertz) to the circuit, generating an electrical field.
—Diya Dwarakanath, IEEE Spectrum, 11 Aug. 2025
Circling back to the 20,000 kilohertz that humans can hear—white noise is all of that, all at once.
—Julia Forbes, Wired News, 7 Aug. 2025
See All Example Sentences for kilohertz
Cite this Entry
“Kilohertz.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/kilohertz. Accessed 20 Sep. 2025.
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kilohertz
noun
Medical Definition
kilohertz
noun
ˈkē-lə-
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