Dictionary

infrasonic

adjective in·fra·son·ic \ˌin-frə-ˈsä-nik, -(ˌ)frä-\

Definition of INFRASONIC

1
:  having or relating to a frequency below the audibility range of the human ear
2
:  utilizing or produced by infrasonic waves or vibrations

First Known Use of INFRASONIC

1927

infrasonic

adjective in·fra·son·ic \-ˈsän-ik\   (Medical Dictionary)

Medical Definition of INFRASONIC

1
:  having or relating to a frequency below the audibility range of the human ear
2
:  utilizing or produced by infrasonic waves or vibrations

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