"500º" meaning in Portuguese

{
  "forms": [
    {
      "form": "500ª",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "500ᵒˢ",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "500ᵃˢ",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "fpl": "500ᵃˢ",
        "hascomp": "no",
        "mpl": "500ᵒˢ"
      },
      "expansion": "500º (feminine 500ª, masculine plural 500ᵒˢ, feminine plural 500ᵃˢ, not comparable)",
      "name": "pt-adj"
    },
    {
      "args": {
        "1": "pt",
        "2": "proscribed"
      },
      "expansion": "(proscribed)",
      "name": "tlb"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "500.º"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Portuguese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Portuguese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of 500.º"
      ],
      "id": "en-500º-pt-adj-oFpR4ZEx",
      "links": [
        [
          "500.º",
          "500.º#Portuguese"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "not-comparable",
        "proscribed"
      ]
    }
  ],
  "word": "500º"
}

{
  "forms": [
    {
      "form": "500ª",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "500ᵒˢ",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "500ᵃˢ",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "fpl": "500ᵃˢ",
        "hascomp": "no",
        "mpl": "500ᵒˢ"
      },
      "expansion": "500º (feminine 500ª, masculine plural 500ᵒˢ, feminine plural 500ᵃˢ, not comparable)",
      "name": "pt-adj"
    },
    {
      "args": {
        "1": "pt",
        "2": "proscribed"
      },
      "expansion": "(proscribed)",
      "name": "tlb"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "500.º"
        }
      ],
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Portuguese adjectives",
        "Portuguese adjectives with red links in their headword lines",
        "Portuguese entries with incorrect language header",
        "Portuguese lemmas",
        "Portuguese links with redundant wikilinks",
        "Portuguese proscribed terms",
        "Portuguese terms spelled with numbers",
        "Portuguese terms spelled with º",
        "Portuguese uncomparable adjectives"
      ],
      "glosses": [
        "Alternative form of 500.º"
      ],
      "links": [
        [
          "500.º",
          "500.º#Portuguese"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "not-comparable",
        "proscribed"
      ]
    }
  ],
  "word": "500º"
}