{
    "term": "acid",
    "partOfSpeech": "noun",
    "ox5000": true,
    "cefr": "b2",
    "definitions": [
        {
            "senseNumber": 1,
            "definition": "a chemical, usually a liquid, that contains hydrogen and has a pH of less than seven. The hydrogen can be replaced by a metal to form a salt. Acids usually have a bitter sharp taste and can often burn holes in or damage things they touch.",
            "labels": "(chemistry)",
            "cefr": "b2",
            "examples": [
                {
                    "text": "The acid burned a hole in her coat."
                },
                {
                    "text": "Stomach acids can break down the poison."
                },
                {
                    "text": "You will need a special chemical to neutralize the acid."
                }
            ],
            "topics": ["Physics and chemistry"],
            "collocations": {
                "adjective": ["concentrated", "strong", "dilute"],
                "verb + acid": ["produce", "neutralize"],
                "acid + verb": ["burn something", "break something down"]
            }
        },
        {
            "senseNumber": 2,
            "definition": "a powerful illegal drug that affects people’s minds and makes them see and hear things that are not really there",
            "labels": "(slang)",
            "examples": [
                {
                    "text": "They smoke joints and drop acid."
                },
                {
                    "text": "He described the music as ‘Brahms on acid’."
                }
            ],
            "synonyms": "LSD",
            "collocations": {
                "verb + acid": ["drop"],
                "preposition": ["on acid"]
            }
        }
    ],
    "pronunciations": {
        "uk": [
            {
                "pronunciation": "/ˈæsɪd/",
                "audio": "ac/acid/acid__gb_1.mp3"
            }
        ],
        "us": [
            {
                "pronunciation": "/ˈæsɪd/",
                "audio": "ac/acid/acid__us_1.mp3"
            }
        ]
    },
    "wordOrigin": "early 17th cent. (in the sense ‘sour-tasting’): from Latin acidus, from acere ‘be sour’."
}