"countable set" meaning in English

{
  "forms": [
    {
      "form": "countable sets",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "countable set (plural countable sets)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "name": "Infinity",
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      ],
      "glosses": [
        "A set that is countable."
      ],
      "id": "en-countable_set-en-noun-iPAh0dT~",
      "links": [
        [
          "set theory",
          "set theory"
        ],
        [
          "set",
          "set"
        ],
        [
          "countable",
          "countable"
        ]
      ],
      "raw_glosses": [
        "(set theory) A set that is countable."
      ],
      "topics": [
        "mathematics",
        "sciences",
        "set-theory"
      ],
      "translations": [
        {
          "code": "hy",
          "lang": "Armenian",
          "roman": "hašveli bazmutʻyun",
          "sense": "set that is countable",
          "word": "հաշվելի բազմություն"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "set that is countable",
          "word": "可數集"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "kěshǔjí",
          "sense": "set that is countable",
          "word": "可数集"
        },
        {
          "code": "cs",
          "lang": "Czech",
          "sense": "set that is countable",
          "tags": [
            "feminine"
          ],
          "word": "spočetná množina"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "set that is countable",
          "tags": [
            "masculine"
          ],
          "word": "ensemble dénombrable"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "set that is countable",
          "tags": [
            "feminine"
          ],
          "word": "abzählbare Menge"
        },
        {
          "code": "it",
          "lang": "Italian",
          "sense": "set that is countable",
          "tags": [
            "masculine"
          ],
          "word": "insieme numerabile"
        },
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "kasanshūgō",
          "sense": "set that is countable",
          "word": "可算集合"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "set that is countable",
          "tags": [
            "masculine"
          ],
          "word": "zbiór przeliczalny"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "sčótnoje mnóžestvo",
          "sense": "set that is countable",
          "tags": [
            "neuter"
          ],
          "word": "счётное мно́жество"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "set that is countable",
          "tags": [
            "masculine"
          ],
          "word": "conjunto numerable"
        }
      ],
      "wikipedia": [
        "countable set"
      ]
    }
  ],
  "word": "countable set"
}

{
  "forms": [
    {
      "form": "countable sets",
      "tags": [
        "plural"
      ]
    }
  ],
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    {
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      "expansion": "countable set (plural countable sets)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A set that is countable."
      ],
      "links": [
        [
          "set theory",
          "set theory"
        ],
        [
          "set",
          "set"
        ],
        [
          "countable",
          "countable"
        ]
      ],
      "raw_glosses": [
        "(set theory) A set that is countable."
      ],
      "topics": [
        "mathematics",
        "sciences",
        "set-theory"
      ],
      "wikipedia": [
        "countable set"
      ]
    }
  ],
  "translations": [
    {
      "code": "hy",
      "lang": "Armenian",
      "roman": "hašveli bazmutʻyun",
      "sense": "set that is countable",
      "word": "հաշվելի բազմություն"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "set that is countable",
      "word": "可數集"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "kěshǔjí",
      "sense": "set that is countable",
      "word": "可数集"
    },
    {
      "code": "cs",
      "lang": "Czech",
      "sense": "set that is countable",
      "tags": [
        "feminine"
      ],
      "word": "spočetná množina"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "set that is countable",
      "tags": [
        "masculine"
      ],
      "word": "ensemble dénombrable"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "set that is countable",
      "tags": [
        "feminine"
      ],
      "word": "abzählbare Menge"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "set that is countable",
      "tags": [
        "masculine"
      ],
      "word": "insieme numerabile"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "kasanshūgō",
      "sense": "set that is countable",
      "word": "可算集合"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "set that is countable",
      "tags": [
        "masculine"
      ],
      "word": "zbiór przeliczalny"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "sčótnoje mnóžestvo",
      "sense": "set that is countable",
      "tags": [
        "neuter"
      ],
      "word": "счётное мно́жество"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "set that is countable",
      "tags": [
        "masculine"
      ],
      "word": "conjunto numerable"
    }
  ],
  "word": "countable set"
}