"Ramanujan graph" meaning in All languages combined

{
  "etymology_text": "Named after mathematician Srinivasa Ramanujan.",
  "forms": [
    {
      "form": "Ramanujan graphs",
      "tags": [
        "plural"
      ]
    }
  ],
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    {
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      "expansion": "Ramanujan graph (plural Ramanujan graphs)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Graph theory",
          "orig": "en:Graph theory",
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        }
      ],
      "glosses": [
        "A regular graph whose spectral gap is almost as large as possible, making it an excellent spectral expander. Such graphs are relevant to diverse branches of pure mathematics."
      ],
      "id": "en-Ramanujan_graph-en-noun-L2yVKGZB",
      "links": [
        [
          "graph theory",
          "graph theory"
        ],
        [
          "regular graph",
          "regular graph"
        ],
        [
          "spectral gap",
          "spectral gap"
        ],
        [
          "expander",
          "expander"
        ],
        [
          "pure mathematics",
          "pure mathematics"
        ]
      ],
      "raw_glosses": [
        "(graph theory) A regular graph whose spectral gap is almost as large as possible, making it an excellent spectral expander. Such graphs are relevant to diverse branches of pure mathematics."
      ],
      "topics": [
        "graph-theory",
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Srinivasa Ramanujan"
      ]
    }
  ],
  "word": "Ramanujan graph"
}

{
  "etymology_text": "Named after mathematician Srinivasa Ramanujan.",
  "forms": [
    {
      "form": "Ramanujan graphs",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "Ramanujan graph (plural Ramanujan graphs)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "en:Graph theory"
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      "glosses": [
        "A regular graph whose spectral gap is almost as large as possible, making it an excellent spectral expander. Such graphs are relevant to diverse branches of pure mathematics."
      ],
      "links": [
        [
          "graph theory",
          "graph theory"
        ],
        [
          "regular graph",
          "regular graph"
        ],
        [
          "spectral gap",
          "spectral gap"
        ],
        [
          "expander",
          "expander"
        ],
        [
          "pure mathematics",
          "pure mathematics"
        ]
      ],
      "raw_glosses": [
        "(graph theory) A regular graph whose spectral gap is almost as large as possible, making it an excellent spectral expander. Such graphs are relevant to diverse branches of pure mathematics."
      ],
      "topics": [
        "graph-theory",
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Srinivasa Ramanujan"
      ]
    }
  ],
  "word": "Ramanujan graph"
}