white noise

noun

Definition of white noise

1 a : a heterogeneous mixture of sound waves extending over a wide frequency range — compare pink noise
b : a constant background noise; especially : one that drowns out other sounds
2 : meaningless or distracting commotion, hubbub, or chatter
  • the white noise of policy and politics in America
  • —Joseph Nocera

Recent Examples of white noise from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'white noise.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of white noise

1943


Medical Dictionary

white noise

noun

medical Definition of white noise

: a heterogeneous mixture of sound waves extending over a wide frequency range that has been used to mask out unwanted noise interfering with sleep called also white sound

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