"EPR=ER" meaning in English

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        "head": "EPR=ER"
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      "expansion": "EPR=ER (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "ER=EPR"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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          "kind": "other",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Black holes",
          "orig": "en:Black holes",
          "parents": [
            "Astronomy",
            "Astrophysics",
            "Gravity",
            "Relativity",
            "Sciences",
            "Space",
            "Physics",
            "Acceleration",
            "Mechanics",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Faster-than-light travel",
          "orig": "en:Faster-than-light travel",
          "parents": [
            "Astrophysics",
            "Relativity",
            "Science fiction",
            "Travel",
            "Astronomy",
            "Physics",
            "Fiction",
            "Speculative fiction",
            "Human activity",
            "Transport",
            "Sciences",
            "Space",
            "Artistic works",
            "Genres",
            "Human behaviour",
            "All topics",
            "Nature",
            "Art",
            "Entertainment",
            "Human",
            "Fundamental",
            "Culture",
            "Society"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of ER=EPR"
      ],
      "id": "en-EPR=ER-en-noun-ry-pckUg",
      "links": [
        [
          "ER=EPR",
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        "alt-of",
        "alternative",
        "uncountable"
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  "word": "EPR=ER"
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      "expansion": "EPR=ER (uncountable)",
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    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "ER=EPR"
        }
      ],
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English nouns",
        "English terms spelled with =",
        "English terms with non-redundant non-automated sortkeys",
        "English uncountable nouns",
        "en:Black holes",
        "en:Faster-than-light travel"
      ],
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        "Alternative form of ER=EPR"
      ],
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        "alt-of",
        "alternative",
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  "word": "EPR=ER"
}