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infrasound
[ in-fruh-sound ]
infrasound
/ ˈɪnfrəˌsaʊnd; ˌɪnfrəˈsɒnɪk /
noun
- soundlike waves having a frequency below the audible range, that is, below about 16Hz
infrasound
/ ĭn′frə-sound′ /
- 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.
- See Note at ultrasound
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Derived Forms
- infrasonic, adjective
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Word History and Origins
Origin of infrasound1
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Example Sentences
Infrasound is used to indicate when an explosion has occurred, but the technique doesn’t differentiate between ash versus gas in eruptions.
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