• synonyms


noun (used with a singular verb)
  1. the branch of science that deals with the effects of sound waves above human perception.
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Origin of ultrasonics

First recorded in 1930–35; see origin at ultrasonic, -ics
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for ultrasonics

Historical Examples of ultrasonics

  • Ultrasonics were nice, effective, humane police weapons, but they were unreliable.

    Temple Trouble

    Henry Beam Piper

British Dictionary definitions for ultrasonics


  1. (functioning as singular) the branch of physics concerned with ultrasonic wavesAlso called: supersonics
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

ultrasonics in Medicine


  1. The acoustics of ultrasonic sound.
  2. The science and technology that deals with ultrasound.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.