"quingentésimas" meaning in Portuguese

{
  "forms": [
    {
      "form": "500ªs",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "pt",
        "2": "adjective form"
      },
      "expansion": "quingentésimas",
      "name": "head"
    }
  ],
  "hyphenation": [
    "quin‧gen‧té‧si‧mas"
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "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"
        }
      ],
      "form_of": [
        {
          "word": "quingentésimo"
        }
      ],
      "glosses": [
        "feminine plural of quingentésimo"
      ],
      "id": "en-quingentésimas-pt-adj-Esrz6eXa",
      "links": [
        [
          "quingentésimo",
          "quingentésimo#Portuguese"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "plural"
      ]
    }
  ],
  "word": "quingentésimas"
}

{
  "forms": [
    {
      "form": "500ªs",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "pt",
        "2": "adjective form"
      },
      "expansion": "quingentésimas",
      "name": "head"
    }
  ],
  "hyphenation": [
    "quin‧gen‧té‧si‧mas"
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Pages with 2 entries",
        "Pages with entries",
        "Portuguese adjective forms",
        "Portuguese entries with incorrect language header",
        "Portuguese non-lemma forms"
      ],
      "form_of": [
        {
          "word": "quingentésimo"
        }
      ],
      "glosses": [
        "feminine plural of quingentésimo"
      ],
      "links": [
        [
          "quingentésimo",
          "quingentésimo#Portuguese"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "plural"
      ]
    }
  ],
  "word": "quingentésimas"
}