Definition of “noise” - English Dictionary

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“noise” in English

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noisenoun

uk ​ /nɔɪz/ us ​ /nɔɪz/

noise noun (SOUND)

A1 [ C or U ] a sound or sounds, especially when it is unwanted, unpleasant, or loud:

The noise out in the street was deafening.
I heard a loud noise and ran to the window.
traffic/background noise
dangerously high noise levels

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Thesaurus: synonyms and related words

noise noun (INFORMATION)

› [ U ] specialized science unexplained or unexpected information in a sample that is not useful and that can be ignored:

There will be a certain amount of statistical noise in the numbers.

Grammar

Sound or noise?Sound and noise are nouns. We can use them both as countable or uncountable nouns. Both refer to something which you can hear, but when a sound is unwanted or unpleasant, we call it a noise: …

Idiom(s)

make (all) the right, correct, etc. noises
make a noise about sth
make noises

(Definition of “noise” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“noise” in American English

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noisenoun [ C/U ]

us ​ /nɔɪz/

› (a) sound, esp. when it is unwanted, unpleasant, or loud:

[ U ] I heard background noise on the phone line.
[ C ] If the washing machine gets out of balance, it makes a horrible noise.
noisy
adjective [ -er/-est only ] us ​ /ˈnɔɪ·zi/

›

The garbage truck is so noisy it wakes me up in the morning.

(Definition of “noise” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“noise” in Business English

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noisenoun [ U ]

uk ​ /nɔɪz/ us ​

› unnecessary information or activity:

The CEO was accused of making unnecessary noise to distract the board from the main issue.

› a change in a signal, especially one produced by electronic equipment:

Using a single chip reduces the noise on the output signal by 90%.

(Definition of “noise” from the Cambridge Business English Dictionary © Cambridge University Press)

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