ultrasound
  • noun sound in the range of 20 000 Hz which cannot be heard by the human ear
  • Any sound or vibration which occurs at ultrasonic frequencies. Also called ultrasonic sound.
  • The utilization of ultrasonic waves for medical diagnostic or therapeutic purposes. Used, for instance, in ultrasonography, or for ultrasonic therapy.
  • synonym ultrasonic sound

Not what you were looking for?