"nonvariation" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "non",
        "3": "variation"
      },
      "expansion": "non- + variation",
      "name": "prefix"
    }
  ],
  "etymology_text": "From non- + variation.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "nonvariation (uncountable)",
      "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": "English terms prefixed with non-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2001, Gretchen M. Bataille, Native American Representations, page 125:",
          "text": "Such structural alterations on Clara Pearson's part do not change the outlines of her stories, as Edel has noted, but they are the more striking for being departures from the Tillamook convention of nonvariation in storytelling[…]",
          "type": "quote"
        }
      ],
      "glosses": [
        "Absence of variation."
      ],
      "id": "en-nonvariation-en-noun-04cfVOvZ",
      "links": [
        [
          "variation",
          "variation"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "nonvariation"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "non",
        "3": "variation"
      },
      "expansion": "non- + variation",
      "name": "prefix"
    }
  ],
  "etymology_text": "From non- + variation.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "nonvariation (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with non-",
        "English terms with quotations",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "2001, Gretchen M. Bataille, Native American Representations, page 125:",
          "text": "Such structural alterations on Clara Pearson's part do not change the outlines of her stories, as Edel has noted, but they are the more striking for being departures from the Tillamook convention of nonvariation in storytelling[…]",
          "type": "quote"
        }
      ],
      "glosses": [
        "Absence of variation."
      ],
      "links": [
        [
          "variation",
          "variation"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "nonvariation"
}