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infrasonic

[ in-fruh-son-ik ]

adjective

  1. noting or pertaining to a sound wave with a frequency below the audio-frequency range.


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Word History and Origins

Origin of infrasonic1

First recorded in 1925–30; infra- + sonic
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Example Sentences

Such low frequencies, below 20 Hertz, are known as infrasonic notes.

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infrared telescopeinfrasonics