"KVO" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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          "word": "key-value observing"
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          "langcode": "en",
          "name": "Programming",
          "orig": "en:Programming",
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      "examples": [
        {
          "ref": "2014, Rob Napier, Mugunth Kumar, iOS 7 Programming Pushing the Limits, John Wiley & Sons, →ISBN, page 406:",
          "text": "KVO, on the other hand, is a mixed bag. It can be useful, and it can cause trouble. It's implemented in a highly magical way, and some of its usage is quite awkward.",
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        "Initialism of key-value observing."
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          "key-value",
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          "observing",
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      "qualifier": "Apple platforms",
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        "(programming, Apple platforms) Initialism of key-value observing."
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  "word": "KVO"
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  "lang_code": "en",
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          "ref": "2014, Rob Napier, Mugunth Kumar, iOS 7 Programming Pushing the Limits, John Wiley & Sons, →ISBN, page 406:",
          "text": "KVO, on the other hand, is a mixed bag. It can be useful, and it can cause trouble. It's implemented in a highly magical way, and some of its usage is quite awkward.",
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        "(programming, Apple platforms) Initialism of key-value observing."
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  "word": "KVO"
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