infrasound

American  

[in-fruh-sound] / 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

Etymology

Origin of infrasound

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

Example Sentences

See Examples For:

infrasound

"If we want to conduct a thorough assessment of low-frequency sounds and infrasound, we first need a better understanding of how sensory systems process low-frequency sound and infrasound," he said.

From Science Daily ● Jul. 19, 2026

The findings suggest that while humans cannot consciously detect infrasound, the body still registers it in some way.

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

The Nord Stream events offer a rare opportunity to study seismic and infrasound signals from the rupture of an underwater gas pipeline, Heyburn and colleagues noted.

From Science Daily ● Jan. 3, 2024