"OPAC" meaning in All languages combined

{
  "forms": [
    {
      "form": "OPACs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "OPAC (plural OPACs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "online public access catalog"
        }
      ],
      "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": "Library science",
          "orig": "en:Library science",
          "parents": [
            "Education",
            "Information science",
            "Sciences",
            "Society",
            "Applied sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Acronym of online public access catalog."
      ],
      "id": "en-OPAC-en-noun-M6YEockb",
      "links": [
        [
          "library science",
          "library science"
        ],
        [
          "online public access catalog",
          "online public access catalog#English"
        ]
      ],
      "qualifier": "library science",
      "raw_glosses": [
        "(library science) Acronym of online public access catalog."
      ],
      "tags": [
        "abbreviation",
        "acronym",
        "alt-of"
      ],
      "wikipedia": [
        "OPAC"
      ]
    }
  ],
  "word": "OPAC"
}

{
  "forms": [
    {
      "form": "OPACs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "OPAC (plural OPACs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "online public access catalog"
        }
      ],
      "categories": [
        "English acronyms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "en:Library science"
      ],
      "glosses": [
        "Acronym of online public access catalog."
      ],
      "links": [
        [
          "library science",
          "library science"
        ],
        [
          "online public access catalog",
          "online public access catalog#English"
        ]
      ],
      "qualifier": "library science",
      "raw_glosses": [
        "(library science) Acronym of online public access catalog."
      ],
      "tags": [
        "abbreviation",
        "acronym",
        "alt-of"
      ],
      "wikipedia": [
        "OPAC"
      ]
    }
  ],
  "word": "OPAC"
}