"D-sub" meaning in English

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      "expansion": "Clipping of D-subminiature",
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  "etymology_text": "Clipping of D-subminiature, from the Cannon part numbering system where such connectors’ designations are prefixed with D.",
  "forms": [
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      "form": "D-subs",
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  "lang_code": "en",
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          "ref": "1996, Jan Axelson, Parallel Port Complete: Programming, Interfacing & Using the PC’s Parallel Printer Port:",
          "text": "Some serial ports use a 25-contact D-sub, but with few exceptions, a 25-pin serial D-sub on a PC is male, with the female connector on the cable—the reverse of the parallel-port convention. (Other serial ports use 9-pin D-subs instead.)",
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      "glosses": [
        "an electrical connector with two or more rows of pins or sockets surrounded by a D-shaped metal shield"
      ],
      "hyponyms": [
        {
          "alt": "DB-25",
          "word": "parallel port"
        },
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          "alt": "RS-232",
          "word": "serial port"
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          "socket",
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        [
          "D-shaped",
          "D-shaped"
        ],
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          "metal",
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        ],
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          "shield",
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        ]
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        "(electronics) an electrical connector with two or more rows of pins or sockets surrounded by a D-shaped metal shield"
      ],
      "synonyms": [
        {
          "word": "D-subminiature"
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        "physical-sciences",
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        "D-sub"
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  "word": "D-sub"
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  "etymology_text": "Clipping of D-subminiature, from the Cannon part numbering system where such connectors’ designations are prefixed with D.",
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      "alt": "DB-25",
      "word": "parallel port"
    },
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      "alt": "RS-232",
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  "pos": "noun",
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        "(electronics) an electrical connector with two or more rows of pins or sockets surrounded by a D-shaped metal shield"
      ],
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        "electrical-engineering",
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      "word": "D-subminiature"
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