"brown hydrogen" meaning in All languages combined

{
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      "expansion": "brown hydrogen (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
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        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Carbon",
          "orig": "en:Carbon",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Fossil fuels",
          "orig": "en:Fossil fuels",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Gases",
          "orig": "en:Gases",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Hydrogen",
          "orig": "en:Hydrogen",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Hydrogen produced by burning coal."
      ],
      "id": "en-brown_hydrogen-en-noun-c6bdg8sX",
      "links": [
        [
          "Hydrogen",
          "hydrogen#English"
        ],
        [
          "coal",
          "coal"
        ]
      ],
      "related": [
        {
          "word": "black hydrogen"
        },
        {
          "word": "blue hydrogen"
        },
        {
          "word": "gray hydrogen"
        },
        {
          "word": "green hydrogen"
        },
        {
          "word": "grey hydrogen"
        }
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "brown hydrogen"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
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      "expansion": "brown hydrogen (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "black hydrogen"
    },
    {
      "word": "blue hydrogen"
    },
    {
      "word": "gray hydrogen"
    },
    {
      "word": "green hydrogen"
    },
    {
      "word": "grey hydrogen"
    }
  ],
  "senses": [
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        "en:Carbon",
        "en:Fossil fuels",
        "en:Gases",
        "en:Hydrogen"
      ],
      "glosses": [
        "Hydrogen produced by burning coal."
      ],
      "links": [
        [
          "Hydrogen",
          "hydrogen#English"
        ],
        [
          "coal",
          "coal"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "brown hydrogen"
}