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ultrasonically
Variant of ultrasonic
adjective
designating or of a frequency of mechanical vibrations above the range audible to the human ear, i.e., above 20,000 vibrations per second
Related Forms:
- ultrasonically adverb
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.