"sd" meaning in Swedish

{
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "proper noun"
      },
      "expansion": "sd",
      "name": "head"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Sverigedemokraterna"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Swedish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Swedish entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "sv",
          "name": "Politics",
          "orig": "sv:Politics",
          "parents": [
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Sweden Democrats; Abbreviation of Sverigedemokraterna."
      ],
      "id": "en-sd-sv-name-aW~gZYj~",
      "links": [
        [
          "Sverigedemokraterna",
          "Sverigedemokraterna#Swedish"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "sd"
}

{
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "proper noun"
      },
      "expansion": "sd",
      "name": "head"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Sverigedemokraterna"
        }
      ],
      "categories": [
        "Swedish abbreviations",
        "Swedish entries with incorrect language header",
        "Swedish entries with topic categories using raw markup",
        "Swedish lemmas",
        "Swedish proper nouns",
        "sv:Politics"
      ],
      "glosses": [
        "Sweden Democrats; Abbreviation of Sverigedemokraterna."
      ],
      "links": [
        [
          "Sverigedemokraterna",
          "Sverigedemokraterna#Swedish"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "sd"
}