tera·​hertz ˈter-ə-ˌhərts How to pronounce terahertz (audio)
plural terahertz
: a unit of frequency equal to one trillion hertz
Visible light occupies the neighborhood of 300 terahertz, which is 300 x 1012 cycles per second.Dave Doody
Terahertz waves also occupy a unique window of the electromagnetic spectrum where a large number of molecules emit and absorb radiation.Michael C. Wanke et al.

Examples of terahertz in a Sentence

Recent Examples on the Web Ranging in frequency from 0.1 to 10 terahertz, terahertz rays could be key to future high-speed wireless networks, which will transmit data at terabits (trillions of bits) per second. IEEE Spectrum, 23 Apr. 2024 Many studies have looked at various aspects of operating in the terahertz regime. IEEE Spectrum, 7 Mar. 2024 Compared to traditional antennas that have a limited range of tuned frequencies, broadband Rydberg atomic receivers can operate across a huge span of frequencies ranging from HF long-wavelength to millimeter-wavelength frequencies in the terahertz spectrum. Paul Smith-Goodson, Forbes, 20 Feb. 2024 To achieve high-resolution terahertz imaging without superlensing, Tuniz and Kuhlmey would have to place an expensive probe less than a millimeter away from the sample being observed. IEEE Spectrum, 31 Oct. 2023 While radio signals range from 3 hertz to 3,000 gigahertz, near-infrared laser signals are around 300 terahertz—which is why engineers can pack so much more data into them. IEEE Spectrum, 2 Oct. 2023 Since this story was originally published, research continues into expanding cell signals into the terahertz range, which remains both the most obvious and flashiest option for pursuing every cellular generation’s mandate: faster speeds and lower latencies. IEEE Spectrum, 22 Aug. 2023 Instead of using cables to connect external electronics to quantum computers, MIT researchers propose using terahertz radiation. IEEE Spectrum, 8 Mar. 2023 In future iterations, the team hopes to expand its sensing capabilities to incorporate WiFi, mmWaves, or terahertz waves. Andrew Paul, Popular Science, 27 Feb. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'terahertz.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


tera- + hertz

First Known Use

1964, in the meaning defined above

Time Traveler
The first known use of terahertz was in 1964

Dictionary Entries Near terahertz

Cite this Entry

“Terahertz.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/terahertz. Accessed 23 Jun. 2024.

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