"NaN" meaning in All languages combined

{
  "forms": [
    {
      "form": "NaNs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "NaN (countable and uncountable, plural NaNs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "applied to numeric values that represent an undefined or unrepresentable value, such as zero divided by itself",
          "word": "not a number"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
          "parents": [
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Acronym of not a number: applied to numeric values that represent an undefined or unrepresentable value, such as zero divided by itself."
      ],
      "id": "en-NaN-en-noun-wAlNNybw",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "not",
          "not#English"
        ],
        [
          "number",
          "number#English"
        ],
        [
          "numeric",
          "numeric"
        ],
        [
          "value",
          "value"
        ]
      ],
      "raw_glosses": [
        "(computing) Acronym of not a number: applied to numeric values that represent an undefined or unrepresentable value, such as zero divided by itself."
      ],
      "tags": [
        "abbreviation",
        "acronym",
        "alt-of",
        "countable",
        "uncountable"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/næn/"
    },
    {
      "rhymes": "-æn"
    },
    {
      "homophone": "nan"
    },
    {
      "audio": "en-us-nan.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/5b/En-us-nan.ogg/En-us-nan.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/5/5b/En-us-nan.ogg",
      "tags": [
        "US"
      ],
      "text": "Audio (US)"
    }
  ],
  "word": "NaN"
}

{
  "forms": [
    {
      "form": "NaNs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "NaN (countable and uncountable, plural NaNs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "applied to numeric values that represent an undefined or unrepresentable value, such as zero divided by itself",
          "word": "not a number"
        }
      ],
      "categories": [
        "English 1-syllable words",
        "English acronyms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English palindromes",
        "English terms with IPA pronunciation",
        "English terms with audio links",
        "English terms with homophones",
        "English uncountable nouns",
        "Rhymes:English/æn",
        "Rhymes:English/æn/1 syllable",
        "en:Computing"
      ],
      "glosses": [
        "Acronym of not a number: applied to numeric values that represent an undefined or unrepresentable value, such as zero divided by itself."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "not",
          "not#English"
        ],
        [
          "number",
          "number#English"
        ],
        [
          "numeric",
          "numeric"
        ],
        [
          "value",
          "value"
        ]
      ],
      "raw_glosses": [
        "(computing) Acronym of not a number: applied to numeric values that represent an undefined or unrepresentable value, such as zero divided by itself."
      ],
      "tags": [
        "abbreviation",
        "acronym",
        "alt-of",
        "countable",
        "uncountable"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/næn/"
    },
    {
      "rhymes": "-æn"
    },
    {
      "homophone": "nan"
    },
    {
      "audio": "en-us-nan.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/5b/En-us-nan.ogg/En-us-nan.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/5/5b/En-us-nan.ogg",
      "tags": [
        "US"
      ],
      "text": "Audio (US)"
    }
  ],
  "word": "NaN"
}