ultrasonic

ultrasonic /ul·tra·son·ic/ (-son´ik) beyond the upper limit of perception by the human ear; relating to sound waves having a frequency of more than 20,000 Hz.

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ul·tra·son·ic (ltr-snk)

adj.

1. Of or relating to acoustic frequencies above the range audible to the human ear, or above approximately 20,000 hertz.

2. Of, relating to, or involving ultrasound.

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ultrasonic (ul´trson´ik),

adj pertaining to sound frequencies so high (greater than 20 kHz) they cannot be perceived by the human ear.

ultrasonic cleaner,

n an electronic generator that transmits high-energy and high-frequency vibrations to a fluid-filled container used to remove particulate matter from dental instruments and appliances.

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ultrasonic

beyond the audible range; relating to sound waves having a frequency of more than 20,000 cycles per second.

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ultrasonic cleaning

surgical instruments can be thoroughly cleaned by the use of ultrasonic waves which cause the formation of minute gas bubbles which, when they collapse, form shock waves.

ultrasonic heating

the use of ultrasound for producing localized hyperthermia.

ultrasonic pregnancy diagnosis

see ultrasonography.

ultrasonic probe

used to disintegrate masses internally, e.g. the optic lens.

ultrasonic tooth scaling

the use of vibrations to remove supragingival calculus. See ultrasonic scaler.