"triannual" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "tri",
        "3": "annual"
      },
      "expansion": "tri- + annual",
      "name": "prefix"
    }
  ],
  "etymology_text": "From tri- + annual.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "triannual (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 tri-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Three",
          "orig": "en:Three",
          "parents": [
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Happening three times each year."
      ],
      "id": "en-triannual-en-adj-Qntilmim",
      "related": [
        {
          "english": "every three years; usually every four months",
          "word": "triennial which is sometimes confused with triannual"
        },
        {
          "english": "every two years",
          "word": "biennial"
        },
        {
          "english": "also twice a year",
          "sense": "biannual (twice a year).",
          "word": "semiannual"
        }
      ],
      "tags": [
        "not-comparable"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "three times a year",
          "word": "kolmannesvuosittainen"
        }
      ]
    }
  ],
  "word": "triannual"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "tri",
        "3": "annual"
      },
      "expansion": "tri- + annual",
      "name": "prefix"
    }
  ],
  "etymology_text": "From tri- + annual.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "triannual (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "english": "every three years; usually every four months",
      "word": "triennial which is sometimes confused with triannual"
    },
    {
      "english": "every two years",
      "word": "biennial"
    },
    {
      "english": "also twice a year",
      "sense": "biannual (twice a year).",
      "word": "semiannual"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms prefixed with tri-",
        "English uncomparable adjectives",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "en:Three"
      ],
      "glosses": [
        "Happening three times each year."
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "three times a year",
      "word": "kolmannesvuosittainen"
    }
  ],
  "word": "triannual"
}