"UNED" meaning in Spanish

{
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "proper noun"
      },
      "expansion": "UNED",
      "name": "head"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Universidad Nacional de Educación a Distancia"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "es",
          "name": "Education",
          "orig": "es:Education",
          "parents": [
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Acronym of Universidad Nacional de Educación a Distancia."
      ],
      "id": "en-UNED-es-name-d3d5IXOU",
      "links": [
        [
          "Universidad Nacional de Educación a Distancia",
          "w:Universidad Nacional de Educación a Distancia"
        ]
      ],
      "tags": [
        "abbreviation",
        "acronym",
        "alt-of"
      ]
    }
  ],
  "word": "UNED"
}

{
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "proper noun"
      },
      "expansion": "UNED",
      "name": "head"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Universidad Nacional de Educación a Distancia"
        }
      ],
      "categories": [
        "Spanish acronyms",
        "Spanish entries with incorrect language header",
        "Spanish lemmas",
        "Spanish links with redundant alt parameters",
        "Spanish links with redundant wikilinks",
        "Spanish proper nouns",
        "es:Education"
      ],
      "glosses": [
        "Acronym of Universidad Nacional de Educación a Distancia."
      ],
      "links": [
        [
          "Universidad Nacional de Educación a Distancia",
          "w:Universidad Nacional de Educación a Distancia"
        ]
      ],
      "tags": [
        "abbreviation",
        "acronym",
        "alt-of"
      ]
    }
  ],
  "word": "UNED"
}