Dictionary

ultrasonic

adjective ul·tra·son·ic \-ˈsä-nik\

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

Full 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
ul·tra·son·i·cal·ly \-ni-k(ə-)lē\ adverb

First Known Use of ULTRASONIC

1923
Medical Dictionary

ultrasonic

adjective ul·tra·son·ic \-ˈsän-ik\

Medical Definition of ULTRASONIC

1
a :  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>
ul·tra·son·i·cal·ly \-i-k(ə-)lē\ adverb

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