"improval" meaning in English

{
  "forms": [
    {
      "form": "improvals",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "improval (plural improvals)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2012, R. van Schilfgaarde, Clinical Aspects of Renovascular Hypertension, page 198:",
          "text": "This did obviously not influence the clinical course of post-transplant hypertension, since the portion of nephrectomized patients was of comparable magnitude in the group of patients showing spontaneous improval of their hypertension […]",
          "type": "quote"
        }
      ],
      "glosses": [
        "improvement"
      ],
      "id": "en-improval-en-noun-YqSg6fv~",
      "links": [
        [
          "improvement",
          "improvement"
        ]
      ],
      "raw_glosses": [
        "(nonstandard) improvement"
      ],
      "tags": [
        "nonstandard"
      ]
    }
  ],
  "word": "improval"
}

{
  "forms": [
    {
      "form": "improvals",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "improval (plural improvals)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nonstandard terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2012, R. van Schilfgaarde, Clinical Aspects of Renovascular Hypertension, page 198:",
          "text": "This did obviously not influence the clinical course of post-transplant hypertension, since the portion of nephrectomized patients was of comparable magnitude in the group of patients showing spontaneous improval of their hypertension […]",
          "type": "quote"
        }
      ],
      "glosses": [
        "improvement"
      ],
      "links": [
        [
          "improvement",
          "improvement"
        ]
      ],
      "raw_glosses": [
        "(nonstandard) improvement"
      ],
      "tags": [
        "nonstandard"
      ]
    }
  ],
  "word": "improval"
}