infrasound

American  

[in-fruh-saund] / ˈɪn frəˌsaʊnd /

noun

1. sound with frequencies below the audible range.

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infrasound British  

/ ˈɪnfrəˌsaʊnd /

noun

1. soundlike waves having a frequency below the audible range, that is, below about 16Hz

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infrasound Scientific  

/ ĭn′frə-sound′ /

1. Sound whose wave frequency is too low (under 15–20 hertz) to be heard by humans. Some animals, such as elephants and whales, emit calls at infrasound frequencies.

2. See Note at ultrasound

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Other Word Forms

• infrasonic
  adjective

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Etymology

Origin of infrasound

First recorded in 1925–30; infra- + sound ¹

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Example Sentences

See Examples For:

infrasound

In the animal world, some species rely on infrasound to communicate, while others actively avoid it.

From Science Daily ● May 3, 2026

"This study was in many ways a first step towards understanding the effects of infrasound on humans," cautioned Scatterty.

From Science Daily ● May 3, 2026

When scientists examined whether people can perceive infrasound, they found that we are not consciously aware of it.

From Science Daily ● May 3, 2026

Still, larger and more diverse studies will be needed to fully understand how infrasound shapes human emotions and behavior.

From Science Daily ● May 3, 2026

Seismometers catch the tiniest of volcanic shudders while other sensors track infrasound, which are waves with a frequency too low for human hearing.

From Science Magazine ● May 27, 2024

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