Definition of "ultrasonics" [ultrasonics]

• The acoustics of ultrasonic sound. (noun)
• The science and technology that deals with the study and application of ultrasound. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Most traditional nondestructive tools used in the pipeline industry (such as ultrasonics and magnetic flux leakage) are used for determination of cracks, corrosion or other flaws that have already occurred."
• "(such as ultrasonics and magnetic flux leakage) are used for determination of cracks, corrosion or other flaws that have already occurred."
• "There are a number of systems based on ultrasonics to detect pregnancy in a cow."