"perfectivity" meaning in English

{
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        "2": "perfective",
        "3": "ity"
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      "expansion": "perfective + -ity",
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  ],
  "etymology_text": "From perfective + -ity.",
  "head_templates": [
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      "args": {
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      "expansion": "perfectivity (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Grammar",
          "orig": "en:Grammar",
          "parents": [
            "Linguistics",
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The state of being in perfective aspect or the imperfective aspect"
      ],
      "id": "en-perfectivity-en-noun-vl7xk1rQ",
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "perfective aspect",
          "perfective aspect"
        ],
        [
          "imperfective aspect",
          "imperfective aspect"
        ]
      ],
      "raw_glosses": [
        "(grammar) The state of being in perfective aspect or the imperfective aspect"
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    }
  ],
  "word": "perfectivity"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "perfective",
        "3": "ity"
      },
      "expansion": "perfective + -ity",
      "name": "suffix"
    }
  ],
  "etymology_text": "From perfective + -ity.",
  "head_templates": [
    {
      "args": {
        "1": "-"
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      "expansion": "perfectivity (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "en:Grammar"
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      "glosses": [
        "The state of being in perfective aspect or the imperfective aspect"
      ],
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "perfective aspect",
          "perfective aspect"
        ],
        [
          "imperfective aspect",
          "imperfective aspect"
        ]
      ],
      "raw_glosses": [
        "(grammar) The state of being in perfective aspect or the imperfective aspect"
      ],
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        "uncountable"
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
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  "word": "perfectivity"
}