"closed interval" meaning in English

{
  "forms": [
    {
      "form": "closed intervals",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "closed interval (plural closed intervals)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "open interval"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Mandarin terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "an interval in the real number line which contains its supremum and infimum."
      ],
      "hypernyms": [
        {
          "word": "interval"
        }
      ],
      "id": "en-closed_interval-en-noun-R6ynlGlU",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "interval",
          "interval"
        ],
        [
          "real number line",
          "real number line"
        ],
        [
          "supremum",
          "supremum"
        ],
        [
          "infimum",
          "infimum"
        ]
      ],
      "raw_glosses": [
        "(mathematics) an interval in the real number line which contains its supremum and infimum."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "Translations",
          "word": "閉區間"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "bìqūjiān",
          "sense": "Translations",
          "word": "闭区间"
        },
        {
          "code": "cs",
          "lang": "Czech",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "uzavřený interval"
        },
        {
          "code": "ko",
          "lang": "Korean",
          "roman": "dachin'gugan",
          "sense": "Translations",
          "word": "닫힌구간"
        },
        {
          "code": "ko",
          "lang": "Korean",
          "roman": "pyegugan",
          "sense": "Translations",
          "word": "폐구간"
        }
      ]
    }
  ],
  "word": "closed interval"
}

{
  "forms": [
    {
      "form": "closed intervals",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "closed interval (plural closed intervals)",
      "name": "en-noun"
    }
  ],
  "hypernyms": [
    {
      "word": "interval"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "open interval"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Mandarin terms with redundant transliterations",
        "Translation table header lacks gloss",
        "en:Mathematics"
      ],
      "glosses": [
        "an interval in the real number line which contains its supremum and infimum."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "interval",
          "interval"
        ],
        [
          "real number line",
          "real number line"
        ],
        [
          "supremum",
          "supremum"
        ],
        [
          "infimum",
          "infimum"
        ]
      ],
      "raw_glosses": [
        "(mathematics) an interval in the real number line which contains its supremum and infimum."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "Translations",
      "word": "閉區間"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "bìqūjiān",
      "sense": "Translations",
      "word": "闭区间"
    },
    {
      "code": "cs",
      "lang": "Czech",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "uzavřený interval"
    },
    {
      "code": "ko",
      "lang": "Korean",
      "roman": "dachin'gugan",
      "sense": "Translations",
      "word": "닫힌구간"
    },
    {
      "code": "ko",
      "lang": "Korean",
      "roman": "pyegugan",
      "sense": "Translations",
      "word": "폐구간"
    }
  ],
  "word": "closed interval"
}