Etymology of smog

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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    {
      "name": "blend",
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        "1": "en",
        "2": "smoke",
        "3": "fog"
      },
      "expansion": "Blend of smoke + fog"
    }
  ],
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    [
      "smoke",
      "smoke#English"
    ],
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      "fog",
      "fog#English"
    ]
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  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "A noxious mixture of particulates and gases that is the result of urban air pollution."
      ],
      "tags": [
        "countable",
        "uncountable"
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    {
      "pos": "verb",
      "glosses": [
        "To get a smog check; to check a vehicle or have it checked for emissions."
      ],
      "tags": [
        "informal"
      ],
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