"HDD" meaning in English

{
  "forms": [
    {
      "form": "HDDs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "HDD (plural HDDs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "hard disk drive"
        }
      ],
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
          "parents": [
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "97 3",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Initialism of hard disk drive."
      ],
      "id": "en-HDD-en-noun-Ghb3qpVu",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "hard disk drive",
          "hard disk drive#English"
        ]
      ],
      "raw_glosses": [
        "(computing) Initialism of hard disk drive."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "heating degree day"
        }
      ],
      "categories": [],
      "glosses": [
        "Initialism of heating degree day."
      ],
      "id": "en-HDD-en-noun-qqu6wTl8",
      "links": [
        [
          "heating",
          "heating#English"
        ],
        [
          "degree day",
          "degree day#English"
        ]
      ],
      "qualifier": "heating",
      "raw_glosses": [
        "(heating) Initialism of heating degree day."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈeɪt͡ʃˌdiːˌdiː/"
    },
    {
      "audio": "en-ca-HDD.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/65/En-ca-HDD.ogg/En-ca-HDD.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/6/65/En-ca-HDD.ogg",
      "tags": [
        "Canada"
      ],
      "text": "Audio (CA)"
    }
  ],
  "word": "HDD"
}

{
  "categories": [
    "English 3-syllable words",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English terms with IPA pronunciation",
    "English terms with audio links",
    "English words without vowels"
  ],
  "forms": [
    {
      "form": "HDDs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "HDD (plural HDDs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "hard disk drive"
        }
      ],
      "categories": [
        "English initialisms",
        "en:Computing"
      ],
      "glosses": [
        "Initialism of hard disk drive."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "hard disk drive",
          "hard disk drive#English"
        ]
      ],
      "raw_glosses": [
        "(computing) Initialism of hard disk drive."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    },
    {
      "alt_of": [
        {
          "word": "heating degree day"
        }
      ],
      "categories": [
        "English initialisms"
      ],
      "glosses": [
        "Initialism of heating degree day."
      ],
      "links": [
        [
          "heating",
          "heating#English"
        ],
        [
          "degree day",
          "degree day#English"
        ]
      ],
      "qualifier": "heating",
      "raw_glosses": [
        "(heating) Initialism of heating degree day."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈeɪt͡ʃˌdiːˌdiː/"
    },
    {
      "audio": "en-ca-HDD.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/65/En-ca-HDD.ogg/En-ca-HDD.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/6/65/En-ca-HDD.ogg",
      "tags": [
        "Canada"
      ],
      "text": "Audio (CA)"
    }
  ],
  "word": "HDD"
}