infrasound

[ in-fruh-sound ]
/ ˈɪn frəˌsaʊnd /

noun

sound with frequencies below the audible range.

Origin of infrasound

First recorded in 1925–30; infra- + sound1

Words nearby infrasound

infrared radiation, infrared star, infrared telescope, infrasonic, infrasonics, infrasound, infraspecific, infraspinatus bursa, infrastructure, infratemporal crest, infratemporal fossa

British Dictionary definitions for infrasound

infrasound
/ (ˈɪnfrəˌsaʊnd) /

noun

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

Derived forms of infrasound

infrasonic (ˌɪnfrəˈsɒnɪk), adjective

Scientific definitions for infrasound

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.

Other words from infrasound

infrasonic adjective