"vigintennial" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "viginti-",
        "3": "-ennial",
        "t1": "twenty",
        "t2": "yearly"
      },
      "expansion": "viginti- (“twenty”) + -ennial (“yearly”)",
      "name": "af"
    },
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "vīgintī",
        "4": "",
        "5": "twenty"
      },
      "expansion": "Latin vīgintī (“twenty”)",
      "name": "der"
    }
  ],
  "etymology_text": "From viginti- (“twenty”) + -ennial (“yearly”), from Latin vīgintī (“twenty”) and -enniālis, from annus (“year”) + -is (“forming compound adjectives”) + -ālis (“-al: forming adjectives”).",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "vigintennial (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with viginti-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -ennial",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Time",
          "orig": "en:Time",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Twenty",
          "orig": "en:Twenty",
          "parents": [
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Synonym of vicennial, occurring every twenty years."
      ],
      "id": "en-vigintennial-en-adj-ShlendZ~",
      "links": [
        [
          "vicennial",
          "vicennial#English"
        ],
        [
          "occur",
          "occur"
        ],
        [
          "every",
          "every"
        ],
        [
          "twenty",
          "twenty"
        ],
        [
          "year",
          "year"
        ]
      ],
      "raw_glosses": [
        "(rare) Synonym of vicennial, occurring every twenty years."
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "vicennial"
        },
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "occurring every twenty years"
        }
      ],
      "tags": [
        "not-comparable",
        "rare"
      ]
    }
  ],
  "word": "vigintennial"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "viginti-",
        "3": "-ennial",
        "t1": "twenty",
        "t2": "yearly"
      },
      "expansion": "viginti- (“twenty”) + -ennial (“yearly”)",
      "name": "af"
    },
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "vīgintī",
        "4": "",
        "5": "twenty"
      },
      "expansion": "Latin vīgintī (“twenty”)",
      "name": "der"
    }
  ],
  "etymology_text": "From viginti- (“twenty”) + -ennial (“yearly”), from Latin vīgintī (“twenty”) and -enniālis, from annus (“year”) + -is (“forming compound adjectives”) + -ālis (“-al: forming adjectives”).",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "vigintennial (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms derived from Latin",
        "English terms prefixed with viginti-",
        "English terms suffixed with -ennial",
        "English terms with rare senses",
        "English uncomparable adjectives",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Time",
        "en:Twenty"
      ],
      "glosses": [
        "Synonym of vicennial, occurring every twenty years."
      ],
      "links": [
        [
          "vicennial",
          "vicennial#English"
        ],
        [
          "occur",
          "occur"
        ],
        [
          "every",
          "every"
        ],
        [
          "twenty",
          "twenty"
        ],
        [
          "year",
          "year"
        ]
      ],
      "raw_glosses": [
        "(rare) Synonym of vicennial, occurring every twenty years."
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "vicennial"
        },
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "occurring every twenty years"
        }
      ],
      "tags": [
        "not-comparable",
        "rare"
      ]
    }
  ],
  "word": "vigintennial"
}