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pollution US English

The presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects

pollution US Thesaurus

air and water pollution

air pollution US English

The presence in or introduction into the air of a substance which has harmful or poisonous effects

light pollution US English

Brightening of the night sky caused by street lights and other man-made sources, which has a disruptive effect on natural cycles and inhibits the observation of stars and planets

noise pollution US English

Harmful or annoying levels of noise, as from airplanes, industry, etc.

genetic pollution US English

The spread of altered genes from genetically engineered organisms to other, nonengineered organisms, especially by cross-pollination