"metanode" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "meta",
        "3": "node"
      },
      "expansion": "meta- + node",
      "name": "prefix"
    }
  ],
  "etymology_text": "From meta- + node.",
  "forms": [
    {
      "form": "metanodes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "metanode (plural metanodes)",
      "name": "en-noun"
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  "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"
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          "source": "w"
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        {
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          "name": "English terms prefixed with meta-",
          "parents": [],
          "source": "w"
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        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A node, in a graph, that represents a subgraph that is at a lower level of abstraction"
      ],
      "id": "en-metanode-en-noun-tp9yXu-r",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "node",
          "node"
        ],
        [
          "graph",
          "graph"
        ],
        [
          "subgraph",
          "subgraph"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A node, in a graph, that represents a subgraph that is at a lower level of abstraction"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "metanode"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "meta",
        "3": "node"
      },
      "expansion": "meta- + node",
      "name": "prefix"
    }
  ],
  "etymology_text": "From meta- + node.",
  "forms": [
    {
      "form": "metanodes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "metanode (plural metanodes)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with meta-",
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        "en:Mathematics"
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      "glosses": [
        "A node, in a graph, that represents a subgraph that is at a lower level of abstraction"
      ],
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        [
          "mathematics",
          "mathematics"
        ],
        [
          "node",
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        [
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      ],
      "raw_glosses": [
        "(mathematics) A node, in a graph, that represents a subgraph that is at a lower level of abstraction"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "metanode"
}