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 ultrasonically (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 In the area of HABs elimination, Stubbs said the Alliance is working with researchers from the Netherlands on using ultrasonic sound waves that destroy blooms at a molecular level. Brian Albrecht, cleveland, "Something old, something new, in solutions against toxic algae in Ohio’s inland lakes," 12 Apr. 2020 The sensor uses ultrasonic waves to identify where the finger rests on the side of the phone, and the gauge measures force through strain on the surface. Julian Chokkattu, Wired, "Get Ready for More Phones With No Buttons," 14 Jan. 2020 Traditional approaches used to detect springs in pipes—from visual inspection, to electromagnetic methods, to acoustic and ultrasonic processes—are outmoded, time-consuming, and sluggish. Courtney Linder, Popular Mechanics, "This Neural Net Can Detect Leaky Pipes in Mere Seconds," 10 Apr. 2020 Cool mist can be accomplished in different ways, including evaporative and ultrasonic technologies: Evaporative humidifiers use a fan to draw air through a wet wick (or wick filters) and then release the vapor into the air. Jessica Teich, Good Housekeeping, "Cool Mist vs. Warm Mist Humidifiers — Which Is Best for Your Family?," 17 Mar. 2020 And the one thing everyone wants to see with Black Canary, her ultrasonic voice, doesn’t disappoint, although the trailers gave that moment away. David Betancourt, Washington Post, "‘Birds of Prey’ is no ‘Harley Quinn’ animated series, but it maintains DC’s winning streak at the movies," 7 Feb. 2020 As for traps and ultrasonic or electronic pest repellers, not all are created equally. Globe Staff, BostonGlobe.com, "Have that gnawing feeling you’re not alone?," 31 Jan. 2020 To navigate a city, Prime Air drones will be outfitted with a suite of visual, thermal, and ultrasonic sensors. Jake Bittle, Harper's magazine, "The Birds," 20 Jan. 2020 Plus, there's a camera feed for the rearview mirror, and the ultrasonic sensors on the bottom of the side mirrors can measure water depth. Dave Vanderwerp, Car and Driver, "First Drive: 2020 Land Rover Defender Is Ruggedness Evolved," 24 Mar. 2020

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 Jun 2020

Cite this Entry

“Ultrasonic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrasonic. Accessed 5 Jun. 2020.

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More Definitions for ultrasonic


How to pronounce ultrasonic (audio)

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 ultrasonically (audio) \ adverb

More from Merriam-Webster on ultrasonic

Rhyming Dictionary: Words that rhyme with ultrasonic

Spanish Central: Translation of ultrasonic

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