from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Sound or a sound that is loud, unpleasant, unexpected, or undesired.
  • n. Sound or a sound of any kind: The only noise was the wind in the pines.
  • n. A loud outcry or commotion: the noise of the mob; a lot of noise over the new law.
  • n. Physics A disturbance, especially a random and persistent disturbance, that obscures or reduces the clarity of a signal.
  • n. Computer Science Irrelevant or meaningless data.
  • n. Informal A complaint or protest.
  • n. Informal Rumor; talk.
  • n. Informal Remarks or actions intended to convey a specific impression or to attract attention: "The U.S. is making appropriately friendly noises to the new Socialist Government” ( Flora Lewis).
  • transitive v. To spread the rumor or report of.
  • intransitive v. To talk much or volubly.
  • intransitive v. To be noisy; make noise.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Various sounds, usually unwanted.
  • n. Sound or signal generated by random fluctuations
  • n. Unwanted part of a signal. (Signal to noise ratio)
  • n. The measured level of variation in gene expression among cells, regardless of source, within a supposedly identical population
  • n. rumour or complaint
  • v. To make noise.
  • v. To spread news of; to spread as rumor or gossip.

from the GNU version of the Collaborative International Dictionary of English

  • n. Sound of any kind.
  • n. Especially, loud, confused, or senseless sound; clamor; din.
  • n. Loud or continuous talk; general talk or discussion; rumor; report.
  • n. Music, in general; a concert; also, a company of musicians; a band.
  • intransitive v. To sound; to make a noise.
  • transitive v. To spread by rumor or report.
  • transitive v. To disturb with noise.

from The Century Dictionary and Cyclopedia

  • To sound.
  • To spread by rumor or report; report: often with abroad.
  • To report of; spread rumors concerning; accuse publicly.
  • To disturb with noise.
  • n. A sound of any kind and proceeding from any source; especially, an annoying or disagreeable sound, or a mixture of confused sounds; a din: as, the noise of falling water; the noise of battle.
  • n. Outcry; clamor; loud, importunate, or continued talk: as, to make a great noise about trifles.
  • n. Frequent talk; much public conversation or discussion; stir.
  • n. Report; rumor.
  • n. A set or company of musicians; a band.
  • n. Offense; offensive savor.
  • n. Synonyms Tone, etc. (see sound, n., 2 and 3); din, clatter, blare, hubbub, racket, uproar.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the auditory experience of sound that lacks musical quality; sound that is a disagreeable auditory experience
  • n. sound of any kind (especially unintelligible or dissonant sound)
  • n. the quality of lacking any predictable order or plan
  • n. a loud outcry of protest or complaint
  • n. incomprehensibility resulting from irrelevant information or meaningless facts or remarks
  • v. emit a noise
  • n. electrical or acoustic activity that can disturb communication


Middle English, from Old French, perhaps from Vulgar Latin *nausea, discomfort, from Latin nausea, seasickness; see nausea.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle English, from Old French noise ("a dispute, wrangle, strife, noise"); origin uncertain; according to some, from Latin nausea ("disgust, nausea"); according to others, from Latin noxia ("hurt, harm, damage, injury"); but neither explanation is satisfactory in regard to either form or sense. (Wiktionary)


  • As I have independently concluded and stated in this blog, which is also stated in #407, there is no noise in climate, by definition. recalling that exponential growth may lead to strange attractors and feature-laden “noise” structures at ALL time scales?

    Exponential Growth in Physical Systems #2 « Climate Audit

  • The Zemu continued an impetuous muddy torrent, whose hoarse voice, mingled with the deep grumbling noise* [The dull rumbling noise thus produced is one of the most singular phenomena in these mountains, and cannot fail to strike the observer.

    Himalayan Journals — Complete

  • In a more sophisticated manner than cap Dave cap A. 10: 51 AM david_a (291) - Rather than the term noise, the phrase internal variability is sometimes used to describe the effects of ocean oscillations and so forth.


  • In a more sophisticated manner than cap Dave cap A. 27 February 2009 at 2: 31 PM david_a (291) - Rather than the term noise, the phrase internal variability is sometimes used to describe the effects of ocean oscillations and so forth.


  • Most people look around to see what all the noise is about.

    365 tomorrows » 2010 » May : A New Free Flash Fiction SciFi Story Every Day

  • With this amount of volatility, short term noise can sometimes overwhelm.

    Gemma Godfrey: Libya -- Oil, Water, Gold Are the Real Issues

  • Where in all the noise is there any authentic call for a process of truth-telling, a means to reconciliation?

    I’M SORRY!!!! i think….

  • Tonight, much more from Al Gore on climate change, what he calls the noise machine and his take on President Obama's Nobel Peace Prize.

    CNN Transcript Dec 9, 2009

  • The city wants to move the courts to eliminate what it calls noise problems at that location, but Ruehle - and a majority of the association members - has been critical of the plan because of its $3.8 million price tag and because the potential noise being introduced to Granada-area residences.

    Long Beach Press Telegram Most Viewed

  • _timbre_ by which one sound is distinguished from another of the same pitch and intensity is due to the different complications of waves in the air; the ability to discriminate the various waves in the vibrating air is, therefore, the condition of our finding music in it; for every wave has its period, and what we call a noise is a complication of notes too complex for our organs or our attention to decipher.

    The Sense of Beauty Being the Outlines of Aesthetic Theory

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