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n. (used with a sing. verb)
1. The acoustics of ultrasonic sound.
2. The science and technology that deals with the study and application of ultrasound.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(General Physics) (functioning as singular) the branch of physics concerned with ultrasonic waves. Also called: supersonics
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ul•tra•son•ics(ˌʌl trəˈsɒn ɪks)
n. (used with a sing. v.)
the study of the effects of sound waves having wavelengths above the limits of human perception.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
the science or study of ultrasonic vibrations, those belonging to a frequency above the audio range. — ultrasonic, adj.See also: Sound
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
The study of frequencies higher than those we can hear.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited