"clean coal" meaning in English

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      "expansion": "clean coal (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "_dis1": "16 42 42",
      "word": "bituminous coal"
    },
    {
      "_dis1": "16 42 42",
      "word": "black coal"
    },
    {
      "_dis1": "16 42 42",
      "word": "blue coal"
    },
    {
      "_dis1": "16 42 42",
      "word": "brown coal"
    },
    {
      "_dis1": "16 42 42",
      "word": "dirty coal"
    },
    {
      "_dis1": "16 42 42",
      "word": "hard coal"
    },
    {
      "_dis1": "16 42 42",
      "word": "soft coal"
    },
    {
      "_dis1": "16 42 42",
      "word": "wet coal"
    }
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  "senses": [
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          "_dis": "39 27 33",
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        {
          "_dis": "23 38 39",
          "kind": "topical",
          "langcode": "en",
          "name": "Coal",
          "orig": "en:Coal",
          "parents": [
            "Fossil fuels",
            "Carbon",
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            "Carbon group elements",
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      "glosses": [
        "Any technology that may mitigate emissions of carbon dioxide and other greenhouse gasses that arise from the burning of coal for electrical power."
      ],
      "id": "en-clean_coal-en-noun-OvSQm6p-",
      "tags": [
        "uncountable"
      ]
    },
    {
      "antonyms": [
        {
          "word": "dirty coal"
        },
        {
          "word": "lignite"
        }
      ],
      "categories": [
        {
          "_dis": "39 27 33",
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        {
          "_dis": "23 38 39",
          "kind": "topical",
          "langcode": "en",
          "name": "Coal",
          "orig": "en:Coal",
          "parents": [
            "Fossil fuels",
            "Carbon",
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            "Natural resources",
            "Carbon group elements",
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            "Chemistry",
            "Fundamental",
            "Sciences"
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          "source": "w+disamb"
        }
      ],
      "glosses": [
        "anthracite (a cleaner burning variety of coal, which is usually hard and bluish, with fewer impurities; making it acceptable for uses needing cleaner coal)"
      ],
      "id": "en-clean_coal-en-noun-dNT-QuRZ",
      "links": [
        [
          "anthracite",
          "anthracite#English"
        ]
      ],
      "raw_glosses": [
        "(dated) anthracite (a cleaner burning variety of coal, which is usually hard and bluish, with fewer impurities; making it acceptable for uses needing cleaner coal)"
      ],
      "tags": [
        "dated",
        "uncountable"
      ]
    },
    {
      "antonyms": [
        {
          "word": "dirty coal"
        }
      ],
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        {
          "_dis": "28 31 41",
          "kind": "topical",
          "langcode": "en",
          "name": "Climate change",
          "orig": "en:Climate change",
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          "_dis": "23 38 39",
          "kind": "topical",
          "langcode": "en",
          "name": "Coal",
          "orig": "en:Coal",
          "parents": [
            "Fossil fuels",
            "Carbon",
            "Energy",
            "Natural resources",
            "Carbon group elements",
            "Nature",
            "Matter",
            "Chemical elements",
            "All topics",
            "Chemistry",
            "Fundamental",
            "Sciences"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "coke (a coked version of coal, that has been cleaned of many of its impurities, making it acceptable for use in steel-making and other uses needing cleaner coal)"
      ],
      "id": "en-clean_coal-en-noun-~9nf4zBj",
      "links": [
        [
          "coke",
          "coke#English"
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          "coked",
          "coked#English"
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      "raw_glosses": [
        "(dated) coke (a coked version of coal, that has been cleaned of many of its impurities, making it acceptable for use in steel-making and other uses needing cleaner coal)"
      ],
      "tags": [
        "dated",
        "uncountable"
      ]
    }
  ],
  "word": "clean coal"
}

{
  "categories": [
    "English entries with incorrect language header",
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    "English nouns",
    "English uncountable nouns",
    "en:Climate change",
    "en:Coal"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "bituminous coal"
    },
    {
      "word": "black coal"
    },
    {
      "word": "blue coal"
    },
    {
      "word": "brown coal"
    },
    {
      "word": "dirty coal"
    },
    {
      "word": "hard coal"
    },
    {
      "word": "soft coal"
    },
    {
      "word": "wet coal"
    }
  ],
  "senses": [
    {
      "glosses": [
        "Any technology that may mitigate emissions of carbon dioxide and other greenhouse gasses that arise from the burning of coal for electrical power."
      ],
      "tags": [
        "uncountable"
      ]
    },
    {
      "antonyms": [
        {
          "word": "dirty coal"
        },
        {
          "word": "lignite"
        }
      ],
      "categories": [
        "English dated terms"
      ],
      "glosses": [
        "anthracite (a cleaner burning variety of coal, which is usually hard and bluish, with fewer impurities; making it acceptable for uses needing cleaner coal)"
      ],
      "links": [
        [
          "anthracite",
          "anthracite#English"
        ]
      ],
      "raw_glosses": [
        "(dated) anthracite (a cleaner burning variety of coal, which is usually hard and bluish, with fewer impurities; making it acceptable for uses needing cleaner coal)"
      ],
      "tags": [
        "dated",
        "uncountable"
      ]
    },
    {
      "antonyms": [
        {
          "word": "dirty coal"
        }
      ],
      "categories": [
        "English dated terms"
      ],
      "glosses": [
        "coke (a coked version of coal, that has been cleaned of many of its impurities, making it acceptable for use in steel-making and other uses needing cleaner coal)"
      ],
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        [
          "coke",
          "coke#English"
        ],
        [
          "coked",
          "coked#English"
        ]
      ],
      "raw_glosses": [
        "(dated) coke (a coked version of coal, that has been cleaned of many of its impurities, making it acceptable for use in steel-making and other uses needing cleaner coal)"
      ],
      "tags": [
        "dated",
        "uncountable"
      ]
    }
  ],
  "word": "clean coal"
}