ul·​tra·​son·​ic | \ ˌəl-trə-ˈsä-nik How to pronounce ultrasonic (audio) \

Definition of ultrasonic

1 : having a frequency above the human ear's audibility limit of about 20,000 hertz used of waves and vibrations
2 : utilizing, produced by, or relating to ultrasonic waves or vibrations

Other Words from ultrasonic

ultrasonically \ ˌəl-​trə-​ˈsä-​ni-​k(ə-​)lē How to pronounce ultrasonic (audio) \ adverb

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Ultrasound, or ultrasonography, works on the principle that sound is reflected at different speeds by tissues or substances of different densities. Ultrasound technology has been used medically since the 1940s. Sonograms, the pictures produced by ultrasound, can reveal heart defects, tumors, and gallstones; since low-power ultrasonic waves don't present any risks to a body, they're most often used to display fetuses during pregnancy in order to make sure they're healthy. Ultrasonics has many other uses, including underwater sonar sensing. High-power ultrasonics are so intense that they're actually used for drilling and welding.

Examples of ultrasonic in a Sentence

Recent Examples on the Web The two ultrasonic sensors sit under the display, a first for the foldable industry. Chris Smith, BGR, 11 Apr. 2022 The device uses gentle ultrasonic sound waves to wipe away dirt, smudges, and other debris that gets stuck between the crevices of your jewelry. Carly Kulzer, PEOPLE.com, 3 Apr. 2022 This kind of interaction already exists in current Google Nest smart displays, though instead of radar, Google employs ultrasonic sound waves to measure a person's distance from the device. Julian Chokkattu, Wired, 1 Mar. 2022 Meanwhile, the rest of the team looks into the case of Marines having damaged ear canals from ultrasonic waves. Wilson Chapman, Variety, 4 Feb. 2022 However, with dozens of cameras, radars, lidars, infrared and ultrasonic sensors feeding streams of data into a chip like Atlan, the chip itself has become more like a compact data center. Sam Abuelsamid, Forbes, 12 Apr. 2021 The smart white cane uses ultrasonic technology to detect obstacles within 4 feet and GPS tracking to locate the user. Erika Page, The Christian Science Monitor, 8 Mar. 2022 The breakthrough of the contemporary humidifier is ultrasonic technology. Virginia Heffernan, Wired, 5 Jan. 2022 The space-saving humidifier uses ultrasonic technology to generate an ultra-fine mist so your plants can thrive. Emily Belfiore, Better Homes & Gardens, 10 Dec. 2021 See More

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

First Known Use of ultrasonic

1923, in the meaning defined at sense 1

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Time Traveler for ultrasonic

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The first known use of ultrasonic was in 1923

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Last Updated

19 Apr 2022

Cite this Entry

“Ultrasonic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrasonic. Accessed 28 May. 2022.

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More Definitions for ultrasonic


ul·​tra·​son·​ic | \ -ˈsän-ik How to pronounce ultrasonic (audio) \

Medical Definition of ultrasonic

1a : having a frequency above the human ear's audibility limit of about 20,000 hertz used of waves and vibrations
b : utilizing, produced by, or relating to ultrasonic waves or vibrations removal of tartar with an ultrasonic scaler

Other Words from ultrasonic

ultrasonically \ -​i-​k(ə-​)lē How to pronounce ultrasonic (audio) \ adverb


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