"possible world" meaning in English

{
  "forms": [
    {
      "form": "possible worlds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "possible world (plural possible worlds)",
      "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"
        },
        {
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          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Philosophy",
          "orig": "en:Philosophy",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A world conceived in the imagination of persons and concluded to be metaphysically and logically possible because it can be so conceived."
      ],
      "id": "en-possible_world-en-noun-uVMEKNV9",
      "links": [
        [
          "philosophy",
          "philosophy"
        ]
      ],
      "raw_glosses": [
        "(philosophy) A world conceived in the imagination of persons and concluded to be metaphysically and logically possible because it can be so conceived."
      ],
      "related": [
        {
          "word": "counterpart theory"
        },
        {
          "word": "many-worlds interpretation"
        },
        {
          "word": "singleworld"
        },
        {
          "word": "transworld"
        }
      ],
      "topics": [
        "human-sciences",
        "philosophy",
        "sciences"
      ]
    }
  ],
  "word": "possible world"
}

{
  "forms": [
    {
      "form": "possible worlds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "possible world (plural possible worlds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "counterpart theory"
    },
    {
      "word": "many-worlds interpretation"
    },
    {
      "word": "singleworld"
    },
    {
      "word": "transworld"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Philosophy"
      ],
      "glosses": [
        "A world conceived in the imagination of persons and concluded to be metaphysically and logically possible because it can be so conceived."
      ],
      "links": [
        [
          "philosophy",
          "philosophy"
        ]
      ],
      "raw_glosses": [
        "(philosophy) A world conceived in the imagination of persons and concluded to be metaphysically and logically possible because it can be so conceived."
      ],
      "topics": [
        "human-sciences",
        "philosophy",
        "sciences"
      ]
    }
  ],
  "word": "possible world"
}