the process of making air, water, soil, etc. dirty; the state of being dirty. air/water pollution; to reduce pollution levels; new pollution control ...

[uncountable] the process of making air, water, soil, etc. dirty; the state of being dirty air/water pollution to reduce levels of environmental pollution.

the presence in or introduction into the environment (esp. as a result of human activity) of harmful or poisonous substances, or excessive levels of light, ...

Contamination or undesirable modification of soil, food, water, clothing, or the atmosphere by a noxious or toxic substance.

to add dirty or harmful substances to land, air, water, etc. so that it is no longer pleasant or safe to use

POLLUTION definition: 1. damage caused to water, air, etc. by harmful substances or waste: 2. damage caused to water…. Learn more.

the existence of too much artificial light in the environment, for example from street lights, which makes it difficult to see the stars.

1to add dirty or harmful substances to land, air, water, etc. · 2(figurative) a society polluted by racism Topic CollocationsThe Environmentenvironmental damage.

a substance that pollutes something, especially air and water. Extra Examples Both are common pollutants and suspected carcinogens.

oil pollution, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary.