"DOS extender" meaning in English

{
  "forms": [
    {
      "form": "DOS extenders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "DOS extender (plural DOS extenders)",
      "name": "en-noun"
    }
  ],
  "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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          "source": "w"
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          "kind": "topical",
          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
          "parents": [
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An application which allows software to run in protected mode, even though the host operating system runs only in real mode."
      ],
      "id": "en-DOS_extender-en-noun-bh~1fnU7",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "application",
          "application"
        ],
        [
          "protected mode",
          "protected mode"
        ],
        [
          "operating system",
          "operating system"
        ],
        [
          "real mode",
          "real mode"
        ]
      ],
      "raw_glosses": [
        "(computing) An application which allows software to run in protected mode, even though the host operating system runs only in real mode."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ],
      "wikipedia": [
        "DOS extender"
      ]
    }
  ],
  "word": "DOS extender"
}

{
  "forms": [
    {
      "form": "DOS extenders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "DOS extender (plural DOS extenders)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "en:Computing"
      ],
      "glosses": [
        "An application which allows software to run in protected mode, even though the host operating system runs only in real mode."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "application",
          "application"
        ],
        [
          "protected mode",
          "protected mode"
        ],
        [
          "operating system",
          "operating system"
        ],
        [
          "real mode",
          "real mode"
        ]
      ],
      "raw_glosses": [
        "(computing) An application which allows software to run in protected mode, even though the host operating system runs only in real mode."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ],
      "wikipedia": [
        "DOS extender"
      ]
    }
  ],
  "word": "DOS extender"
}