"Roman surface" meaning in English

{
  "etymology_text": "So called because it was discovered by Jakob Steiner when he was in Rome in 1844.",
  "forms": [
    {
      "form": "Roman surfaces",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Roman surface (plural Roman surfaces)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A self-intersecting mapping of the real projective plane into three-dimensional space, with an unusually high degree of symmetry."
      ],
      "id": "en-Roman_surface-en-noun--4t3Bc4e",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "mapping",
          "mapping"
        ],
        [
          "real",
          "real"
        ],
        [
          "projective plane",
          "projective plane"
        ],
        [
          "symmetry",
          "symmetry"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A self-intersecting mapping of the real projective plane into three-dimensional space, with an unusually high degree of symmetry."
      ],
      "synonyms": [
        {
          "word": "Steiner surface"
        }
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "Roman surface"
}

{
  "etymology_text": "So called because it was discovered by Jakob Steiner when he was in Rome in 1844.",
  "forms": [
    {
      "form": "Roman surfaces",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Roman surface (plural Roman surfaces)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Mathematics"
      ],
      "glosses": [
        "A self-intersecting mapping of the real projective plane into three-dimensional space, with an unusually high degree of symmetry."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "mapping",
          "mapping"
        ],
        [
          "real",
          "real"
        ],
        [
          "projective plane",
          "projective plane"
        ],
        [
          "symmetry",
          "symmetry"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A self-intersecting mapping of the real projective plane into three-dimensional space, with an unusually high degree of symmetry."
      ],
      "synonyms": [
        {
          "word": "Steiner surface"
        }
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "Roman surface"
}