"МЦД" meaning in Russian

{
  "forms": [
    {
      "form": "MCD",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in",
        "3": "-"
      },
      "expansion": "МЦД • (MCD) m inan (indeclinable)",
      "name": "ru-proper noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "moskóvskije centrálʹnyje diámetry, “Moscow Central Diameters”",
          "word": "моско́вские центра́льные диа́метры"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "ru",
          "name": "Moscow",
          "orig": "ru:Moscow",
          "parents": [
            "Russia",
            "Asia",
            "Europe",
            "Earth",
            "Eurasia",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ru",
          "name": "Rail transportation",
          "orig": "ru:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "initialism of моско́вские центра́льные диа́метры (moskóvskije centrálʹnyje diámetry, “Moscow Central Diameters”)"
      ],
      "id": "en-МЦД-ru-name-tMtrnKw-",
      "links": [
        [
          "моско́вские",
          "московский#Russian"
        ],
        [
          "центра́льные",
          "центральный#Russian"
        ],
        [
          "диа́метры",
          "диаметр#Russian"
        ]
      ],
      "related": [
        {
          "english": "subway",
          "roman": "metropolitén",
          "word": "метрополите́н"
        },
        {
          "english": "subway",
          "roman": "metró",
          "word": "метро́"
        },
        {
          "english": "Moscow Central Circle",
          "roman": "MCK",
          "word": "МЦК"
        },
        {
          "english": "Big Circle Line",
          "roman": "BKL",
          "word": "БКЛ"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "indeclinable",
        "initialism"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɛm t͡sɛ ˈdɛ]"
    }
  ],
  "word": "МЦД"
}

{
  "forms": [
    {
      "form": "MCD",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in",
        "3": "-"
      },
      "expansion": "МЦД • (MCD) m inan (indeclinable)",
      "name": "ru-proper noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "name",
  "related": [
    {
      "english": "subway",
      "roman": "metropolitén",
      "word": "метрополите́н"
    },
    {
      "english": "subway",
      "roman": "metró",
      "word": "метро́"
    },
    {
      "english": "Moscow Central Circle",
      "roman": "MCK",
      "word": "МЦК"
    },
    {
      "english": "Big Circle Line",
      "roman": "BKL",
      "word": "БКЛ"
    }
  ],
  "senses": [
    {
      "alt_of": [
        {
          "extra": "moskóvskije centrálʹnyje diámetry, “Moscow Central Diameters”",
          "word": "моско́вские центра́льные диа́метры"
        }
      ],
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Russian abbreviations",
        "Russian entries with incorrect language header",
        "Russian inanimate nouns",
        "Russian indeclinable nouns",
        "Russian initialisms",
        "Russian lemmas",
        "Russian masculine nouns",
        "Russian proper nouns",
        "Russian terms with IPA pronunciation",
        "Russian terms with redundant head parameter",
        "ru:Moscow",
        "ru:Rail transportation"
      ],
      "glosses": [
        "initialism of моско́вские центра́льные диа́метры (moskóvskije centrálʹnyje diámetry, “Moscow Central Diameters”)"
      ],
      "links": [
        [
          "моско́вские",
          "московский#Russian"
        ],
        [
          "центра́льные",
          "центральный#Russian"
        ],
        [
          "диа́метры",
          "диаметр#Russian"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "indeclinable",
        "initialism"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɛm t͡sɛ ˈdɛ]"
    }
  ],
  "word": "МЦД"
}