"quinquennalia" meaning in Latin

{
  "forms": [
    {
      "form": "quīnquennālia",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "adjective form",
        "head": "quīnquennālia"
      },
      "expansion": "quīnquennālia",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Latin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Ancient Rome",
          "orig": "en:Ancient Rome",
          "parents": [
            "Ancient Africa",
            "Ancient Europe",
            "Ancient history",
            "Ancient Near East",
            "History of Italy",
            "History of Africa",
            "History of Europe",
            "History",
            "Ancient Asia",
            "Italy",
            "Africa",
            "Europe",
            "All topics",
            "History of Asia",
            "Earth",
            "Eurasia",
            "Fundamental",
            "Asia",
            "Nature"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Five",
          "orig": "en:Five",
          "parents": [
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sports",
          "orig": "en:Sports",
          "parents": [
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "quīnquennālis"
        }
      ],
      "glosses": [
        "nominative/accusative/vocative neuter plural of quīnquennālis"
      ],
      "id": "en-quinquennalia-la-adj-DupgqSgr",
      "links": [
        [
          "quīnquennālis",
          "quinquennalis#Latin"
        ]
      ],
      "tags": [
        "accusative",
        "form-of",
        "neuter",
        "nominative",
        "plural",
        "vocative"
      ]
    }
  ],
  "word": "quinquennalia"
}

{
  "forms": [
    {
      "form": "quīnquennālia",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "adjective form",
        "head": "quīnquennālia"
      },
      "expansion": "quīnquennālia",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Latin adjective forms",
        "Latin entries with incorrect language header",
        "Latin non-lemma forms",
        "en:Ancient Rome",
        "en:Five",
        "en:Sports"
      ],
      "form_of": [
        {
          "word": "quīnquennālis"
        }
      ],
      "glosses": [
        "nominative/accusative/vocative neuter plural of quīnquennālis"
      ],
      "links": [
        [
          "quīnquennālis",
          "quinquennalis#Latin"
        ]
      ],
      "tags": [
        "accusative",
        "form-of",
        "neuter",
        "nominative",
        "plural",
        "vocative"
      ]
    }
  ],
  "word": "quinquennalia"
}