"DVD-ROM" meaning in English

{
  "forms": [
    {
      "form": "DVD-ROMs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "DVD-ROM (plural DVD-ROMs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "a DVD whose contents can be read but not written",
          "word": "Digital Versatile Disc read-only memory"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of Digital Versatile Disc read-only memory: a DVD whose contents can be read but not written."
      ],
      "id": "en-DVD-ROM-en-noun-RPIY05uq",
      "links": [
        [
          "Digital Versatile Disc",
          "w:Digital Versatile Disc"
        ],
        [
          "read-only memory",
          "read-only memory#English"
        ],
        [
          "DVD",
          "DVD"
        ],
        [
          "read",
          "read"
        ],
        [
          "written",
          "write"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "DVD-ROM"
}

{
  "forms": [
    {
      "form": "DVD-ROMs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "DVD-ROM (plural DVD-ROMs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "a DVD whose contents can be read but not written",
          "word": "Digital Versatile Disc read-only memory"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English initialisms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 2 entries",
        "Pages with entries"
      ],
      "glosses": [
        "Initialism of Digital Versatile Disc read-only memory: a DVD whose contents can be read but not written."
      ],
      "links": [
        [
          "Digital Versatile Disc",
          "w:Digital Versatile Disc"
        ],
        [
          "read-only memory",
          "read-only memory#English"
        ],
        [
          "DVD",
          "DVD"
        ],
        [
          "read",
          "read"
        ],
        [
          "written",
          "write"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "DVD-ROM"
}