ultrashort Hear it!

ultrashort definition

ultra·short (-s̸hôrt′)

adjective

very short; specif., designating or of radio waves shorter than 10 meters in wavelength and above 30 megahertz in frequency

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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