"unnilunium" meaning in English

{
  "etymology_text": "Systematic name, literally \"element 101\".",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "unnilunium (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Systematic element names",
          "orig": "en:Systematic element names",
          "parents": [],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "sense": "Previous",
          "word": "fermium Fm"
        },
        {
          "sense": "Next",
          "word": "nobelium No"
        }
      ],
      "glosses": [
        "mendelevium."
      ],
      "id": "en-unnilunium-en-noun-rqVvqlzc",
      "links": [
        [
          "mendelevium",
          "mendelevium"
        ]
      ],
      "raw_glosses": [
        "(dated) mendelevium."
      ],
      "synonyms": [
        {
          "tags": [
            "abbreviation"
          ],
          "word": "Unu"
        }
      ],
      "tags": [
        "dated",
        "uncountable"
      ],
      "wikipedia": [
        "Systematic element name"
      ]
    }
  ],
  "word": "unnilunium"
}

{
  "coordinate_terms": [
    {
      "sense": "Previous",
      "word": "fermium Fm"
    },
    {
      "sense": "Next",
      "word": "nobelium No"
    }
  ],
  "etymology_text": "Systematic name, literally \"element 101\".",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "unnilunium (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English dated terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Systematic element names"
      ],
      "glosses": [
        "mendelevium."
      ],
      "links": [
        [
          "mendelevium",
          "mendelevium"
        ]
      ],
      "raw_glosses": [
        "(dated) mendelevium."
      ],
      "tags": [
        "dated",
        "uncountable"
      ],
      "wikipedia": [
        "Systematic element name"
      ]
    }
  ],
  "synonyms": [
    {
      "tags": [
        "abbreviation"
      ],
      "word": "Unu"
    }
  ],
  "word": "unnilunium"
}