in·​fra·​son·​ic | \ ˌin-frə-ˈsä-nik How to pronounce infrasonic (audio) , -(ˌ)frä- \

Definition of infrasonic

1 : having or relating to a frequency below the audibility range of the human ear
2 : utilizing or produced by infrasonic waves or vibrations

Examples of infrasonic in a Sentence

Recent Examples on the Web While blue whale calls can exceed 180 decibels – louder than the roar of jet airplane – most of their sounds are infrasonic, meaning the frequency of their sound waves falls below the threshold of human hearing. The Christian Science Monitor, 24 Jan. 2022 Even the Earth itself generates a continuous infrasonic hum. Jason Gregg, Smithsonian Magazine, 8 Sep. 2021 Nuclear-blast detectors picked up the signature of a new population of pygmy blue whales and the infrasonic rumblings of 1,001 rocket launches. Rafil Kroll-zaidi, Harper's Magazine, 17 Aug. 2021 The researchers found infrasonic signatures for up to 73% of these rockets, or 733. David Bressan, Forbes, 10 June 2021 The study offers few clues about how terns might do this, but other research suggests some migrating birds detect infrasonic weather signals or observe changing clouds. Joshua Rapp Learn, Scientific American, 1 Oct. 2020 For instance, hot lava flowing down the mountain essentially drained the lava lake at its summit, so there should be a corresponding shift in the infrasonic signature. Jennifer Ouellette, Ars Technica, 24 Aug. 2018 These devices usually operate at the ultrasonic level (above audible range) or the infrasonic level (below audible range). Alex Ward, Vox, 8 June 2018 An infrasonic or ultrasonic weapon can cause hearing loss and physical pain by emitting a sound not audible to a human ear within the vicinity of the victim. Casey Quackenbush, Time, 17 Apr. 2018 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'infrasonic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of infrasonic

1927, in the meaning defined at sense 1

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The first known use of infrasonic was in 1927

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Cite this Entry

“Infrasonic.” Dictionary, Merriam-Webster, Accessed 24 May. 2022.

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More Definitions for infrasonic


in·​fra·​son·​ic | \ -ˈsän-ik How to pronounce infrasonic (audio) \

Medical Definition of infrasonic

1 : having or relating to a frequency below the audibility range of the human ear
2 : utilizing or produced by infrasonic waves or vibrations


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