Pollution

A change in the physical, chemical, or biological characteristics of the air, water, or soil that can affect the health, survival, or activities of humans in an unwanted way. Some expand the term to include harmful effects on all forms of life.

pollution

(Living things in their environment) contamination of the environment, usually by chemicals

pollution

(Learning Modules / Geography / Urban sustainability) The presence of a substance in the environment that because of its chemical composition or quantity prevents the functioning of natural processes and produces undesirable environmental and health effects. Can be land, water or air based.

pollution

(Learning Modules / Geography / Geography of energy) The modification of the environment by substances or chemicals in a way that produces negative impacts.

Pollution

Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of chemical substances or energy, such as noise, heat or light. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants. Pollution is often classed as point...
Found on http://en.wikipedia.org/wiki/Pollution

pollution

(from the article `caste`) ...to raise themselves in the social order. Such efforts have been more successful in the case of low but ritually pure castes than in the case of ... The second reason, closely related to the foregoing, is that one element of dogma in every religion is the definition of polluting, or supernaturally ... ......
Found on http://www.britannica.com/eb/a-z/p/89

pollution

(L: polluere to defile, contaminate) the contamination of a natural ecosystem by wastes from human activities. The contaminants may be nutrients, that initially stimulate growth of primary producers, or they may be chronic toxins.
Found on http://www.seafriends.org.nz/books/glossary.htm

pollution

(pә-loo´shәn) a process of defiling or making impure, especially contamination by noxious substances.
Found on http://www.encyclo.co.uk/local/21001

pollution

[n] - undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities
Found on http://www.webdictionary.co.uk/definition.php?query=pollution

Pollution

• (n.) The act of polluting, or the state of being polluted (in any sense of the verb); defilement; uncleanness; impurity. • (n.) The emission of semen, or sperm, at other times than in sexual intercourse.
Found on http://thinkexist.com/dictionary/meaning/pollution/

pollution

<ecology> The changing of a natural environment, either by natural or artificial means, so that the environment becomes harmful to the living things normally found in it. ... most often this refers to the input of toxic chemicals into the environment. ... (09 Oct 1997) ...
Found on http://www.encyclo.co.uk/local/20973

pollution

noun undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities
Found on https://www.encyclo.co.uk/local/20974

pollution

[Noun] The state of being impure or unfit for use, contaminated; the substance that pollutes.
Example: After the oil spill the pollution spread along the coast.
Found on http://www.bbc.co.uk/skillswise/glossary/

Pollution

Pol·lu'tion noun [ Latin pollutio : confer French pollution .] 1. The act of polluting, or the state of being polluted (in any sense of the verb); defilement; uncleanness; impurity. 2. (Medicine) The emission of semen, or sperm, at other times than in sexual interc...
Found on http://www.encyclo.co.uk/webster/P/119

Pollution

Alteration of the environment, as through the introduction of hazardous or detrimental substances, h
Found on http://www.encyclo.co.uk/local/22399

Pollution

An undesirable contaminate (gas, liquid, noise, solid) which has been released into, and is now a part of, the environment.
Found on http://www.frontierassoc.net/greenaffordablehousing/tools/ChemicalTerms.sht

pollution

any addition of foreign matter, solid, liquid or gaseous that can produce a permanent reduction of dielectric strength or surface resistivity of the insulation NOTE - Ionized gases of a temporary nature are not considered as to be a pollution.
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=442-01-28

Pollution

Any substances in water, soil, or air that degrades the natural quality of the environment, offends
Found on http://www.superglossary.com/Glossary/Business/Real_Estate/

pollution

Degradation of the natural environment by chemicals, oil, trash or other substances.
Found on http://www.pbs.org/emptyoceans/glossary.html

Pollution

Generally, the presence of a substance in the environment that because of its chemical composition or quantity prevents the functioning of natural processes and produces undesirable environmental and health effects.Under the Clean Water Act, for example, the term has been defined as the man-made or man-induced alteration of the physical, biological...
Found on https://www.encyclo.co.uk/local/20094

pollution

Harmful effect on the environment of by-products of human activity, principally industrial and agricultural processes – for example, noise, smoke, car emissions, pesticides, radiation, sewage disposal, household waste, and chemical and radioactive effluents in air, seas, and rivers. Air pollution contributes to the greenhouse effect. Pollu...
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0007895.html

Pollution

is the adverse alteration of land, air or water by a substance. When any alteration is considered adverse, a substance becomes a pollutant.
Found on http://www.epaw.co.uk/EPT/glossary.html

Pollution

Materials that are not supposed to be in the river make it dirty.
Found on http://www.encyclo.co.uk/local/21748

Pollution

Physical, chemical, or biological change in the characteristics of some component of the atmosphere, hydrosphere, lithosphere, or biosphere that adversely influences the health, survival, or activities of humans or other living organisms.
Found on http://www.physicalgeography.net/physgeoglos/p.html

pollution

pollution 1. The introduction of harmful substances or products into the environment. 2. An undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities. 3. The act of contaminating or polluting; including (either intentionally or accidentally) unwanted substances or factors. 4. Ety...
Found on http://www.wordinfo.info/words/index/info/view_unit/1221/2
No exact match found