"quadruplicity" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "quadruplex",
        "3": "ity"
      },
      "expansion": "quadruplex + -ity",
      "name": "suffix"
    }
  ],
  "etymology_text": "Equivalent to quadruplex + -ity.",
  "forms": [
    {
      "form": "quadruplicities",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "quadruplicity (plural quadruplicities)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -ity",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A group of four things."
      ],
      "id": "en-quadruplicity-en-noun-LGkFVJwi",
      "links": [
        [
          "group",
          "group"
        ],
        [
          "four",
          "four"
        ]
      ],
      "related": [
        {
          "word": "quadruple"
        },
        {
          "word": "quadruplex"
        }
      ],
      "synonyms": [
        {
          "sense": "group of four",
          "word": "foursome"
        },
        {
          "word": "tetrad"
        },
        {
          "word": "quartet"
        }
      ]
    }
  ],
  "word": "quadruplicity"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "quadruplex",
        "3": "ity"
      },
      "expansion": "quadruplex + -ity",
      "name": "suffix"
    }
  ],
  "etymology_text": "Equivalent to quadruplex + -ity.",
  "forms": [
    {
      "form": "quadruplicities",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "quadruplicity (plural quadruplicities)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "quadruple"
    },
    {
      "word": "quadruplex"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -ity"
      ],
      "glosses": [
        "A group of four things."
      ],
      "links": [
        [
          "group",
          "group"
        ],
        [
          "four",
          "four"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "sense": "group of four",
      "word": "foursome"
    },
    {
      "word": "tetrad"
    },
    {
      "word": "quartet"
    }
  ],
  "word": "quadruplicity"
}