"elementary topos" meaning in English

{
  "forms": [
    {
      "form": "elementary topoi",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "elementary toposes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "elementary topoi",
        "2": "+"
      },
      "expansion": "elementary topos (plural elementary topoi or elementary toposes)",
      "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": "topical",
          "langcode": "en",
          "name": "Category theory",
          "orig": "en:Category theory",
          "parents": [
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A Cartesian closed category which has a subobject classifier."
      ],
      "hypernyms": [
        {
          "word": "locally Cartesian closed category"
        }
      ],
      "hyponyms": [
        {
          "word": "Grothendieck topos"
        }
      ],
      "id": "en-elementary_topos-en-noun-RtaIL4I5",
      "links": [
        [
          "category theory",
          "category theory"
        ],
        [
          "Cartesian closed category",
          "Cartesian closed category"
        ],
        [
          "subobject classifier",
          "subobject classifier"
        ]
      ],
      "raw_glosses": [
        "(category theory) A Cartesian closed category which has a subobject classifier."
      ],
      "topics": [
        "category-theory",
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "elementary topos"
}

{
  "forms": [
    {
      "form": "elementary topoi",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "elementary toposes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "elementary topoi",
        "2": "+"
      },
      "expansion": "elementary topos (plural elementary topoi or elementary toposes)",
      "name": "en-noun"
    }
  ],
  "hypernyms": [
    {
      "word": "locally Cartesian closed category"
    }
  ],
  "hyponyms": [
    {
      "word": "Grothendieck topos"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Category theory"
      ],
      "glosses": [
        "A Cartesian closed category which has a subobject classifier."
      ],
      "links": [
        [
          "category theory",
          "category theory"
        ],
        [
          "Cartesian closed category",
          "Cartesian closed category"
        ],
        [
          "subobject classifier",
          "subobject classifier"
        ]
      ],
      "raw_glosses": [
        "(category theory) A Cartesian closed category which has a subobject classifier."
      ],
      "topics": [
        "category-theory",
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "elementary topos"
}