Relating to energy waves similar to those of sound but of higher frequencies (above 30,000 Hz). [ultra- + L. sonus, sound]
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ul·tra·son·ic -'sän-ik adj
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>
2) ULTRASOUND
ul·tra·son·i·cal·ly -i-k(ə-)lē adv
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ul·tra·son·ic (ul″trə-sonґik) [ultra- + L. sonus sound] pertaining to sound waves having a frequency beyond the upper limit of perception by the human ear, that is, beyond about 20,000 Hz (20 kHz); called also supersonic. See also ultrasonics.Medical dictionary. 2011.