1-Stop Dictionary Reference

Infrasonic

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The American Heritage® Dictionary of the English Language, 4th Edition

adj. Generating or using waves or vibrations with frequencies below that of audible sound.

Wiktionary, Creative Commons Attribution/Share-Alike License

adj. Having frequencies below the human audible range

adj. Generating or employing such sound waves

WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

adj. having frequencies below those of audible sound

Word Usage

"However, technological advances are making it possible to develop WMD based on qualitatively new principles, such as infrasonic (acoustic), radiological (enhanced-radiation), or particle-beam weapons."

Equivalent

inaudible unhearable

Antonym

ultrasonic

Same Context

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