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

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Other Words from ultrasonic

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

Did You Know?

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 Tesla says its vehicles have eight cameras, 12 ultrasonic sensors and a radar. Matt Mcfarland, CNN, "Tesla owners warned of 'full self-driving' risks even before fatal crash," 21 Apr. 2021 For most self-driving cars, the types of sensors encompass video cameras, radar units, LIDAR units, ultrasonic devices, and the like. Lance Eliot, Forbes, "Using Bountiful Blurring To Keep Self-Driving Cars From Telling All," 15 Apr. 2021 Dahlman likes Pure Enrichment’s MistAire ultrasonic cool-mist humidifier ($39.99, amazon.com). Washington Post, "Don’t want to go back to the gym? Here’s how to carve out a workout space at home.," 30 Mar. 2021 From glasses cleaner cloths to ultrasonic eyeglass cleaners, here are some of our favorite glasses cleaners currently on the market. Popsci Commerce Team, Popular Science, "Best glasses cleaners: Get spotless specs with our top picks," 8 Mar. 2021 This innovative feature made possible by Roborock’s new ultrasonic carpet recognition technology enables the S7 to mop hard floors and vacuum carpets in one, single cleaning session, without interruption. Maren Estrada, BGR, "Last chance to save $50 on the Roborock S7 with crazy new sonic mopping tech," 29 Mar. 2021 What’s interesting here is that Apple is focusing on optical sensors rather than the ultrasonic kind used by Samsung in its flagship S series phones, for instance. David Phelan, Forbes, "Apple iPhone 13: Patent Hints At Radically Different Display Innovation," 21 Mar. 2021 The company’s vehicles are fitted with eight cameras, a dozen ultrasonic sensors, and a radar for autopilot features. Zachary Halaschak, Washington Examiner, "Chinese government restricting Tesla use over security concerns," 19 Mar. 2021 On the high-tech side, several companies offer ultrasonic repellers that supposedly keep mice at bay with sound waves. Adam Hadhazy, Popular Mechanics, "How to Get Rid of Mice in Your Home," 9 Mar. 2021

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.

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First Known Use of ultrasonic

1923, in the meaning defined at sense 1

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Time Traveler for ultrasonic

Time Traveler

The first known use of ultrasonic was in 1923

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Statistics for ultrasonic

Last Updated

1 May 2021

Cite this Entry

“Ultrasonic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrasonic. Accessed 7 May. 2021.

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More Definitions for ultrasonic



English Language Learners Definition of ultrasonic

used to describe sounds that are too high for humans to hear


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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