"AACSB" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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    {
      "alt_of": [
        {
          "extra": "now known as Association to Advance Collegiate Schools of Business",
          "word": "American Association of Collegiate Schools of Business"
        }
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          "source": "w"
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          "kind": "topical",
          "langcode": "en",
          "name": "Organizations",
          "orig": "en:Organizations",
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            "Society",
            "All topics",
            "Fundamental"
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        }
      ],
      "glosses": [
        "Initialism of American Association of Collegiate Schools of Business., now known as Association to Advance Collegiate Schools of Business"
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      "id": "en-AACSB-en-name-a5QWhW7o",
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        "(dated) Initialism of American Association of Collegiate Schools of Business., now known as Association to Advance Collegiate Schools of Business"
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  "word": "AACSB"
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    {
      "args": {},
      "expansion": "AACSB",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "now known as Association to Advance Collegiate Schools of Business",
          "word": "American Association of Collegiate Schools of Business"
        }
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        "English dated terms",
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        "English initialisms",
        "English lemmas",
        "English proper nouns",
        "English uncountable nouns",
        "en:Organizations"
      ],
      "glosses": [
        "Initialism of American Association of Collegiate Schools of Business., now known as Association to Advance Collegiate Schools of Business"
      ],
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        "(dated) Initialism of American Association of Collegiate Schools of Business., now known as Association to Advance Collegiate Schools of Business"
      ],
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        "dated",
        "initialism"
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}