"Selen" meaning in Luxembourgish

{
  "head_templates": [
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      "args": {
        "1": "",
        "2": "-"
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      "expansion": "Selen ? (uncountable)",
      "name": "lb-noun"
    }
  ],
  "lang": "Luxembourgish",
  "lang_code": "lb",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Luxembourgish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "lb",
          "name": "Chemical elements",
          "orig": "lb:Chemical elements",
          "parents": [
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "selenium"
      ],
      "id": "en-Selen-lb-noun-5oSj6U79",
      "links": [
        [
          "selenium",
          "selenium"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "Selen"
}

{
  "head_templates": [
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      "args": {
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      "expansion": "Selen ? (uncountable)",
      "name": "lb-noun"
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  ],
  "lang": "Luxembourgish",
  "lang_code": "lb",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Luxembourgish entries with incorrect language header",
        "Luxembourgish lemmas",
        "Luxembourgish nouns",
        "Luxembourgish uncountable nouns",
        "Luxembourgish unknown gender nouns",
        "Requests for gender in Luxembourgish entries",
        "lb:Chemical elements"
      ],
      "glosses": [
        "selenium"
      ],
      "links": [
        [
          "selenium",
          "selenium"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "Selen"
}