"trigintennial" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "triginta",
        "4": "",
        "5": "thirty"
      },
      "expansion": "Latin triginta (“thirty”)",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "-ennial"
      },
      "expansion": "-ennial",
      "name": "m"
    },
    {
      "args": {
        "1": "la",
        "2": "annus",
        "3": "",
        "4": "year"
      },
      "expansion": "annus (“year”)",
      "name": "m"
    },
    {
      "args": {
        "1": "la",
        "2": "tricennium"
      },
      "expansion": "tricennium",
      "name": "m"
    }
  ],
  "etymology_text": "From Latin triginta (“thirty”) + -ennial, combining adjectival form of annus (“year”). Compare the actual Latin term tricennium.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "trigintennial (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 suffixed with -ennial",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Thirty",
          "orig": "en:Thirty",
          "parents": [
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Time",
          "orig": "en:Time",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Synonym of tricennial, once every thirty years."
      ],
      "id": "en-trigintennial-en-adj-5gn9rRAe",
      "links": [
        [
          "tricennial",
          "tricennial#English"
        ],
        [
          "once",
          "once"
        ],
        [
          "every",
          "every"
        ],
        [
          "thirty",
          "thirty"
        ],
        [
          "year",
          "year"
        ]
      ],
      "raw_glosses": [
        "(uncommon) Synonym of tricennial, once every thirty years."
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "tricennial"
        },
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "once every thirty years"
        }
      ],
      "tags": [
        "not-comparable",
        "uncommon"
      ]
    }
  ],
  "word": "trigintennial"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "triginta",
        "4": "",
        "5": "thirty"
      },
      "expansion": "Latin triginta (“thirty”)",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "-ennial"
      },
      "expansion": "-ennial",
      "name": "m"
    },
    {
      "args": {
        "1": "la",
        "2": "annus",
        "3": "",
        "4": "year"
      },
      "expansion": "annus (“year”)",
      "name": "m"
    },
    {
      "args": {
        "1": "la",
        "2": "tricennium"
      },
      "expansion": "tricennium",
      "name": "m"
    }
  ],
  "etymology_text": "From Latin triginta (“thirty”) + -ennial, combining adjectival form of annus (“year”). Compare the actual Latin term tricennium.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "trigintennial (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 suffixed with -ennial",
        "English terms with uncommon senses",
        "English uncomparable adjectives",
        "en:Thirty",
        "en:Time"
      ],
      "glosses": [
        "Synonym of tricennial, once every thirty years."
      ],
      "links": [
        [
          "tricennial",
          "tricennial#English"
        ],
        [
          "once",
          "once"
        ],
        [
          "every",
          "every"
        ],
        [
          "thirty",
          "thirty"
        ],
        [
          "year",
          "year"
        ]
      ],
      "raw_glosses": [
        "(uncommon) Synonym of tricennial, once every thirty years."
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "tricennial"
        },
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "once every thirty years"
        }
      ],
      "tags": [
        "not-comparable",
        "uncommon"
      ]
    }
  ],
  "word": "trigintennial"
}