"пятилетия" meaning in Russian

{
  "forms": [
    {
      "form": "пятиле́тия",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "pjatilétija",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "noun form",
        "g": "n-in",
        "g2": "n-in-p",
        "head": "пятиле́тия"
      },
      "expansion": "пятиле́тия • (pjatilétija) n inan or n inan pl",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "62 38",
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "inflection of пятиле́тие (pjatilétije):",
        "genitive singular"
      ],
      "id": "en-пятилетия-ru-noun-Tm7dATg7",
      "links": [
        [
          "пятиле́тие",
          "пятилетие#Russian"
        ]
      ],
      "tags": [
        "form-of",
        "genitive",
        "singular"
      ]
    },
    {
      "glosses": [
        "inflection of пятиле́тие (pjatilétije):",
        "nominative/accusative plural"
      ],
      "id": "en-пятилетия-ru-noun-mgcNTyrp",
      "links": [
        [
          "пятиле́тие",
          "пятилетие#Russian"
        ]
      ],
      "tags": [
        "accusative",
        "form-of",
        "nominative",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[pʲɪtʲɪˈlʲetʲɪjə]"
    }
  ],
  "word": "пятилетия"
}

{
  "categories": [
    "Russian 5-syllable words",
    "Russian entries with incorrect language header",
    "Russian non-lemma forms",
    "Russian noun forms",
    "Russian terms with IPA pronunciation"
  ],
  "forms": [
    {
      "form": "пятиле́тия",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "pjatilétija",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "noun form",
        "g": "n-in",
        "g2": "n-in-p",
        "head": "пятиле́тия"
      },
      "expansion": "пятиле́тия • (pjatilétija) n inan or n inan pl",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "inflection of пятиле́тие (pjatilétije):",
        "genitive singular"
      ],
      "links": [
        [
          "пятиле́тие",
          "пятилетие#Russian"
        ]
      ],
      "tags": [
        "form-of",
        "genitive",
        "singular"
      ]
    },
    {
      "glosses": [
        "inflection of пятиле́тие (pjatilétije):",
        "nominative/accusative plural"
      ],
      "links": [
        [
          "пятиле́тие",
          "пятилетие#Russian"
        ]
      ],
      "tags": [
        "accusative",
        "form-of",
        "nominative",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[pʲɪtʲɪˈlʲetʲɪjə]"
    }
  ],
  "word": "пятилетия"
}