"Calabi-Yau manifold" meaning in English

{
  "etymology_text": "The name was coined by Candelas et al. (1985), after Eugenio Calabi (1954, 1957) who first conjectured that such surfaces might exist, and Shing-Tung Yau (1978), who proved the Calabi conjecture.",
  "forms": [
    {
      "form": "Calabi-Yau manifolds",
      "tags": [
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A kind of manifold having properties, such as Ricci flatness, that yield applications in theoretical physics."
      ],
      "id": "en-Calabi-Yau_manifold-en-noun-6Em2zFp5",
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          "algebraic geometry",
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          "Ricci flatness",
          "Ricci flatness"
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          "theoretical physics",
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      "raw_glosses": [
        "(algebraic geometry) A kind of manifold having properties, such as Ricci flatness, that yield applications in theoretical physics."
      ],
      "synonyms": [
        {
          "word": "Calabi-Yau space"
        }
      ],
      "topics": [
        "algebraic-geometry",
        "geometry",
        "mathematics",
        "sciences"
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      "wikipedia": [
        "Calabi conjecture"
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    }
  ],
  "word": "Calabi-Yau manifold"
}

{
  "etymology_text": "The name was coined by Candelas et al. (1985), after Eugenio Calabi (1954, 1957) who first conjectured that such surfaces might exist, and Shing-Tung Yau (1978), who proved the Calabi conjecture.",
  "forms": [
    {
      "form": "Calabi-Yau manifolds",
      "tags": [
        "plural"
      ]
    }
  ],
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  "lang_code": "en",
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        "A kind of manifold having properties, such as Ricci flatness, that yield applications in theoretical physics."
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          "algebraic geometry"
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          "Ricci flatness"
        ],
        [
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        ]
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      "raw_glosses": [
        "(algebraic geometry) A kind of manifold having properties, such as Ricci flatness, that yield applications in theoretical physics."
      ],
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        {
          "word": "Calabi-Yau space"
        }
      ],
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}