{
    "term": "pollution",
    "partOfSpeech": "noun",
    "ox3000": true,
    "cefr": "a2",
    "definitions": [
        {
            "senseNumber": 1,
            "definition": "the process of making air, water, soil, etc. dirty; the state of being dirty",
            "labels": "(especially British English)(especially North American English)(North American English)",
            "cefr": "a2",
            "ox3000": true,
            "examples": [
                {
                    "text": "**air/water pollution**"
                },
                {
                    "text": "to reduce **pollution levels**"
                },
                {
                    "text": "new **pollution control** technologies"
                },
                {
                    "text": "Environmentalists say there is a high risk of pollution from the landfill site."
                },
                {
                    "text": "Many athletes feel the effects of air pollution during outdoor exercise."
                },
                {
                    "text": "The computer model assesses the likely impact of new pollution sources."
                },
                {
                    "text": "The summit ended with a joint pledge to limit pollution."
                },
                {
                    "text": "a convention on combating atmospheric pollution"
                },
                {
                    "text": "a new market in pollution credits"
                },
                {
                    "text": "a tightening of water pollution standards"
                }
            ],
            "topics": ["The environment"],
            "collocations": {
                "adjective": ["air", "atmospheric", "environmental"],
                "verb + pollution": ["cause", "create", "emit"],
                "pollution + noun": ["level", "abatement", "control"],
                "phrases": [
                    "the cost of pollution",
                    "the effects of pollution",
                    "a risk of pollution"
                ]
            }
        },
        {
            "senseNumber": 2,
            "definition": "substances that make air, water, soil, etc. dirty",
            "cefr": "a2",
            "ox3000": true,
            "examples": [
                {
                    "text": "beaches covered with pollution"
                },
                {
                    "text": "The new buses emit no more pollution than the average car."
                }
            ],
            "topics": ["The environment"],
            "collocations": {
                "adjective": ["air", "atmospheric", "environmental"],
                "verb + pollution": ["cause", "create", "emit"],
                "pollution + noun": ["level", "abatement", "control"],
                "phrases": [
                    "the cost of pollution",
                    "the effects of pollution",
                    "a risk of pollution"
                ]
            }
        },
        {
            "senseNumber": 3,
            "definition": "harmful or annoying levels of noise, or of artificial light at night",
            "sensetop": "noise/light pollution",
            "examples": [
                {
                    "text": "Heavy traffic flow is a major source of noise pollution in urban areas."
                },
                {
                    "text": "The government has announced plans to tackle light pollution."
                }
            ],
            "collocations": {
                "adjective": ["air", "atmospheric", "environmental"],
                "verb + pollution": ["cause", "create", "emit"],
                "pollution + noun": ["level", "abatement", "control"],
                "phrases": [
                    "the cost of pollution",
                    "the effects of pollution",
                    "a risk of pollution"
                ]
            }
        }
    ],
    "pronunciations": {
        "uk": [
            {
                "pronunciation": "/pəˈluːʃn/",
                "audio": "po/pollution/pollution__gb_2.mp3"
            }
        ],
        "us": [
            {
                "pronunciation": "/pəˈluːʃn/",
                "audio": "po/pollution/pollution__us_2.mp3"
            }
        ]
    },
    "wordOrigin": "late Middle English: from Latin pollutio(n-), from the verb polluere, based on the root of lutum ‘mud’."
}