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sound wave

The definition of a sound wave is a pressure caused by the vibration of something in a medium that transfers energy, like air.

(noun)

An example of a sound wave is a burst of loud music through a quiet forest.

See sound wave in Webster's New World College Dictionary

Physics a longitudinal pressure wave stimulated by a mechanical disturbance of an elastic medium, as air, at some source and propagated by the action of disturbed particles on adjacent particles; esp., any of such waves within the range of those audible to the human ear (c. 15 cycles to 20,000 cycles per second)

See sound wave in American Heritage Dictionary 4

noun

A longitudinal pressure wave of audible or inaudible sound.

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