"Niemeier lattice" meaning in English

{
  "etymology_text": "After mathematician Hans-Volker Niemeier, who classified them in 1973.",
  "forms": [
    {
      "form": "Niemeier lattices",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Niemeier lattice (plural Niemeier lattices)",
      "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"
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          "source": "w"
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "Any of the 24 positive definite even unimodular lattices of rank 24."
      ],
      "hyponyms": [
        {
          "word": "Leech lattice"
        }
      ],
      "id": "en-Niemeier_lattice-en-noun-hNDQaq-G",
      "links": [
        [
          "mathematics",
          "mathematics"
        ]
      ],
      "raw_glosses": [
        "(mathematics) Any of the 24 positive definite even unimodular lattices of rank 24."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "Niemeier lattice"
}

{
  "etymology_text": "After mathematician Hans-Volker Niemeier, who classified them in 1973.",
  "forms": [
    {
      "form": "Niemeier lattices",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Niemeier lattice (plural Niemeier lattices)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:Mathematics"
      ],
      "glosses": [
        "Any of the 24 positive definite even unimodular lattices of rank 24."
      ],
      "hyponyms": [
        {
          "word": "Leech lattice"
        }
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ]
      ],
      "raw_glosses": [
        "(mathematics) Any of the 24 positive definite even unimodular lattices of rank 24."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "Niemeier lattice"
}