ultrasonic

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.

ultrasonically ul'tra·son'i·cal·ly adv.

(ul′trəson′ik)
adj

Pertaining to sound frequencies so high (greater than 20 kilohertz) they cannot be perceived by the human ear.

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

• u. 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.
• u. heating — the use of ultrasound for producing localized hyperthermia.
• u. pregnancy diagnosis — see ultrasonography.
• u. probe — used to disintegrate masses internally, e.g. the optic lens.
• u. tooth scaling — the use of vibrations to remove supragingival calculus. See ultrasonic scaler.

IN BRIEF: Having to do with sounds too high for human beings to hear.

People believe that dogs can hear ultrasonic sounds so they use dog whistles.

Dansk (Danish)
adj. - supersonisk, overlyds-

Nederlands (Dutch)
ultrasoon (sneller dan hoorbaar geluid), (mv) leer der ultrasonore trillingen

Français (French)
adj. - ultrasonique

Deutsch (German)
adj. - Ultraschall-

Ελληνική (Greek)
adj. - (φυσ.) υπερηχητικός

Italiano (Italian)
ultrasonico, ultrasonica

Português (Portuguese)
adj. - ultra-sônico

Русский (Russian)
сверхзвуковой

Español (Spanish)
adj. - ultrasónico, ultrasónica

Svenska (Swedish)
adj. - ultraljud-

中文（简体）(Chinese (Simplified))
超音速的

中文（繁體）(Chinese (Traditional))
adj. - 超音速的

한국어 (Korean)
adj. - 초음파의

日本語 (Japanese)
adj. - 超音波の

العربيه (Arabic)
‏(صفه) ما بعد السمعي, ما بعد الصوتي‏

עברית (Hebrew)
adj. - ‮על-קולי, על-שמעי‬

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ultrasonic	ultrasonic cleaner
ultrasonic humidifiers	ultrasonic humidifier