Meaning & use
ultrasonic
Relating to sound waves with a frequency too high for humans to hear.
See it in a sentence
Bats use ultrasonic calls to navigate and locate insects in the dark.
The dentist's cleaning tool uses ultrasonic vibrations to remove plaque.
A note on using this word
Ultrasonic contrasts with supersonic, which describes speed faster than sound, not frequency of sound.
Words with a similar meaning
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