ultrasonic definition, ultrasonic meaning | English dictionary

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      adj   of, concerned with, or producing waves with the same nature as sound waves but frequencies above audio frequencies  
   See also       ultrasound  
  ultrasonically      adv  

ultrasonic cleaning  
      n   the use of ultrasound to vibrate a piece to be cleaned while the piece is immersed in a cleaning fluid. The process produces a very high degree of cleanliness, and is used for jewellery and ornately shaped items  
ultrasonic testing  
      n     (Engineering)   the scanning of material with an ultrasonic beam, during which reflections from faults in the material can be detected: a powerful nondestructive test method  
ultrasonic welding  
      n   the use of high-energy vibration of ultrasonic frequency to produce a weld between two components which are held in close contact  
English Collins Dictionary - English Definition & Thesaurus  
Collaborative Dictionary     English Definition
Ultrasonic Test
Non destructive test method, abreviation in accordance with norm EN4179 or NAS410
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