pollution

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pol·lu·tion

 (pə-lo͞o′shən)
n.
1. The act or process of polluting or the state of being polluted, especially the contamination of soil, water, or the atmosphere by the discharge of harmful substances.
2. Something that pollutes; a pollutant or a group of pollutants: Pollution in the air reduced the visibility near the airport.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

pollution

(pəˈluːʃən)
n
1. the act of polluting or the state of being polluted
2. (Environmental Science) harmful or poisonous substances introduced into an environment
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

pol•lu•tion

(pəˈlu ʃən)

n.
1. the act of polluting or the state of being polluted.
2. the introduction of harmful substances or products into the environment: air pollution.
[1350–1400; Middle English (< Old French) < Late Latin]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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pollution
Pollution can affect air, water, or land and can threaten the health of humans, wildlife, and plants.

pol·lu·tion

(pə-lo͞o′shən)
The contamination of air, water, or soil by substances that are harmful to living things. ♦ Light from cities and towns at night that interferes with astronomical observations is known as light pollution. It can also disturb natural rhythms of growth in plants and other organisms. ♦ Continuous noise that is loud enough to be annoying or physically harmful is known as noise pollution. ♦ Heat from hot water that is discharged from a factory into a river or lake, where it can kill or endanger aquatic life, is known as thermal pollution.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

pollution

When there is pollution, the water or air in a place is dirty, impure, and dangerous, usually because poisonous chemicals have got into it.

...changes in the climate due to pollution of the atmosphere.

Pollution is an uncount noun. You do not talk about 'pollutions' or 'a pollution'.

Collins COBUILD English Usage © HarperCollins Publishers 1992, 2004, 2011, 2012

pollution

Introducing harmful substances or other agents into the environment.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pollution - undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activitiespollution - undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities
impureness, impurity - the condition of being impure
environmental condition - the state of the environment
biodegradable pollution - pollution that is rendered harmless by natural processes and so causes no permanent harm
nonbiodegradable pollution - pollution that accumulates in the environment and may appear in the food chain
air pollution - pollution of the atmosphere; "air pollution reduced the visibility"
noise pollution, sound pollution - annoying and potentially harmful environmental noise
thermal pollution - harm to lakes and rivers resulting from the release of excessive waste heat into them
water pollution - pollution of the water in rivers and lakes
2.pollution - the state of being pollutedpollution - the state of being polluted    
dirtiness, uncleanness - the state of being unsanitary
3.pollution - the act of contaminating or polluting; including (either intentionally or accidentally) unwanted substances or factors
dirtying, soiling, soilure - the act of soiling something
dust contamination - the act of contaminating with dust particles
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

pollution

noun
2. waste, poisons, dirt, impurities the level of pollution in the river
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002

pollution

noun
1. The state of being contaminated:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Translations
تَلَوُّثتَلْويث
znečistěníznečištění
forurening
saastesaastuminensaastuttaminen
zagađenost
környezetszennyezésszennyeződés
mengun
汚染汚染物質
오염
onesnaževanje
förorening
มลพิษ
kirlenmekirletme
sự ô nhiễm

pollution

[pəˈluːʃən]
A. N
2. (fig) → corrupción f
B. CPD pollution control Ncontrol m de la contaminación
pollution levels NPLniveles mpl de contaminación
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

pollution

[pəˈluːʃən] n [air, water, land] → pollution f
environmental pollution → pollution f de l'environnement
Collins English/French Electronic Resource. © HarperCollins Publishers 2005

pollution

n (of environment)Umweltverschmutzung f, → Verschmutzung f; (of atmosphere)Verunreinigung f; (of rivers)Verunreinigung f, → Verpestung f (pej); (fig)Korrumpierung f; the fight against pollutionder Kampf gegen die Umweltverschmutzung; pollution levelGrad mder Umweltverschmutzung; (of air, water) → Schadstoffbelastung f
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

pollution

[pəˈluːʃn] n (see vb) → inquinamento, corruzione f
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

pollute

(pəˈluːt) verb
to make dirty. Chemicals are polluting the air.
polˈlution (-ʃən) noun
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.

pollution

تَلَوُّث znečištění forurening Umweltverschmutzung ρύπανση contaminación saaste pollution zagađenost inquinamento 汚染 오염 vervuiling forurensning zanieczyszczenie poluição загрязнение förorening มลพิษ kirlenme sự ô nhiễm 污染
Multilingual Translator © HarperCollins Publishers 2009

pol·lu·tion

n. polución, contaminación;
air ______ del aire;
water ______ del agua;
noise ______ de ruidos.
English-Spanish Medical Dictionary © Farlex 2012

pollution

n contaminación f; air — contaminación atmosférica (form), contaminación del aire; water — contaminación del agua
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
Until recently high levels of anesthetic pollution in the operating rooms of Italian hospitals have been often reported.