"nullness" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "null",
        "3": "ness"
      },
      "expansion": "null + -ness",
      "name": "suffix"
    }
  ],
  "etymology_text": "From null + -ness.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "nullness (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 suffixed with -ness",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2021, A. K. Blakemore, The Manningtree Witches, Granta Books, page 169:",
          "text": "He stares off into the nullness of the blue-grey sky, upright in the saddle, and there is no exultance in his face as we are led away.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The quality of being null or empty."
      ],
      "id": "en-nullness-en-noun-mIhxP1Td",
      "links": [
        [
          "null",
          "null"
        ],
        [
          "empty",
          "empty"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "nullness"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "null",
        "3": "ness"
      },
      "expansion": "null + -ness",
      "name": "suffix"
    }
  ],
  "etymology_text": "From null + -ness.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "nullness (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 suffixed with -ness",
        "English terms with quotations",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2021, A. K. Blakemore, The Manningtree Witches, Granta Books, page 169:",
          "text": "He stares off into the nullness of the blue-grey sky, upright in the saddle, and there is no exultance in his face as we are led away.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The quality of being null or empty."
      ],
      "links": [
        [
          "null",
          "null"
        ],
        [
          "empty",
          "empty"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "nullness"
}