"Killing field" meaning in All languages combined

{
  "etymology_text": "Named after Wilhelm Killing.",
  "forms": [
    {
      "form": "Killing fields",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Killing field (plural Killing fields)",
      "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"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A vector field on a Riemannian manifold (or pseudo-Riemannian manifold) that preserves the metric."
      ],
      "id": "en-Killing_field-en-noun-YcxdKSYd",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "vector field",
          "vector field"
        ],
        [
          "Riemannian manifold",
          "Riemannian manifold"
        ],
        [
          "preserve",
          "preserve"
        ],
        [
          "metric",
          "metric"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A vector field on a Riemannian manifold (or pseudo-Riemannian manifold) that preserves the metric."
      ],
      "related": [
        {
          "word": "Killing horizon"
        }
      ],
      "synonyms": [
        {
          "word": "Killing vector field"
        }
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Killing vector field"
      ]
    }
  ],
  "word": "Killing field"
}

{
  "etymology_text": "Named after Wilhelm Killing.",
  "forms": [
    {
      "form": "Killing fields",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Killing field (plural Killing fields)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "Killing horizon"
    }
  ],
  "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": [
        "A vector field on a Riemannian manifold (or pseudo-Riemannian manifold) that preserves the metric."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "vector field",
          "vector field"
        ],
        [
          "Riemannian manifold",
          "Riemannian manifold"
        ],
        [
          "preserve",
          "preserve"
        ],
        [
          "metric",
          "metric"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A vector field on a Riemannian manifold (or pseudo-Riemannian manifold) that preserves the metric."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Killing vector field"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "Killing vector field"
    }
  ],
  "word": "Killing field"
}