| Title | infrasonic |
|---|---|
| Text |
Merriam-Webster's Collegiate Dictionary in·fra·son·ic DATE 1927 1. having or relating to a frequency below the audibility range of the human ear 2. utilizing or produced by infrasonic waves or vibrations Webster's Third New International Dictionary, Unabridged in·fra·sonic \“+\ adjective Etymology: infra- + sonic 1. : having a frequency lower than about 16 cycles per second and therefore below the audibility range of the human ear and producing only a fluttering sensation with no sense of pitch — compare sonic , supersonic 2. : utilizing or produced by infrasonic waves or vibrations |
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