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
ultrasonicallyplay \ˌəl-trə-ˈsä-ni-k(ə-)lē\ adverb
Recent Examples of ultrasonic from the Web
While issues like the sewer backups have since been resolved, the ultrasonic humidifier – which is typically more energy-efficient – remained one of the most constant nuisances for the museum.
At the same time, two arms trace the circumference of the pipeline, measuring its thickness and structural integrity by using ultrasonic sensors that act like sonar devices that bounce high-frequency signals through the line.
While autonomous car designs use numerous sensors, including ultrasonic, radar and video-camera components, lidar has unique abilities.
While autonomous car designs use numerous sensors, including ultrasonic, radar and video camera components, lidar has unique abilities.
What's more, the towers lack anything resembling a perch, and engineers are testing the use of ultrasonic waves to repel hawks and bats, says David Stewart-Smith, an Oregon energy resources administrator.
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.
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.
First Known Use of ultrasonic
ULTRASONIC Defined for English Language Learners
Definition of ultrasonic for English Language Learners
—used to describe sounds that are too high for humans to hear
Medical Definition of ultrasonic
1a: having a frequency above the human ear's audibility limit of about 20,000 hertz—used of waves and vibrationsb: utilizing, produced by, or relating to ultrasonic waves or vibrations removal of tartar with an ultrasonic scaler
Seen and Heard
What made you want to look up ultrasonic? Please tell us where you read or heard it (including the quote, if possible).