{
    "term": "oxygen",
    "partOfSpeech": "noun",
    "ox5000": true,
    "cefr": "b2",
    "definitions": [
        {
            "senseNumber": null,
            "definition": "a chemical element. Oxygen is a gas that is present in air and water and is necessary for people, animals and plants to live.",
            "examples": [
                {
                    "text": "The patient didn't seem to be getting enough oxygen."
                },
                {
                    "text": "After dark the plants stop producing oxygen."
                },
                {
                    "text": "There was a risk the brain might be starved of oxygen."
                },
                {
                    "text": "the blood which carries oxygen to the brain"
                }
            ],
            "topics": ["Physics and chemistry"],
            "collocations": {
                "adjective": ["pure", "liquid", "atmospheric"],
                "verb + oxygen": ["carry", "contain", "absorb"],
                "oxygen + noun": ["atom", "molecule", "level"],
                "phrases": ["a lack of oxygen", "a supply of oxygen"]
            }
        }
    ],
    "pronunciations": {
        "uk": [
            {
                "pronunciation": "/ˈɒksɪdʒən/",
                "audio": "ox/oxygen/oxygen__gb_1.mp3"
            }
        ],
        "us": [
            {
                "pronunciation": "/ˈɑːksɪdʒən/",
                "audio": "ox/oxygen/oxygen__us_1.mp3"
            }
        ]
    },
    "wordOrigin": "late 18th cent.: from French (principe) oxygène ‘acidifying constituent’ (because at first it was held to be the essential component in the formation of acids)."
}