"leading diagonal" meaning in English

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    {
      "form": "leading diagonals",
      "tags": [
        "plural"
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      "expansion": "leading diagonal (plural leading diagonals)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "langcode": "en",
          "name": "Linear algebra",
          "orig": "en:Linear algebra",
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      ],
      "glosses": [
        "A main diagonal."
      ],
      "id": "en-leading_diagonal-en-noun-kjsKxqxz",
      "links": [
        [
          "linear algebra",
          "linear algebra"
        ],
        [
          "main diagonal",
          "main diagonal"
        ]
      ],
      "raw_glosses": [
        "(linear algebra) A main diagonal."
      ],
      "topics": [
        "linear-algebra",
        "mathematics",
        "sciences"
      ]
    }
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  "word": "leading diagonal"
}

{
  "forms": [
    {
      "form": "leading diagonals",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
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      "expansion": "leading diagonal (plural leading diagonals)",
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  "lang_code": "en",
  "pos": "noun",
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        "en:Linear algebra"
      ],
      "glosses": [
        "A main diagonal."
      ],
      "links": [
        [
          "linear algebra",
          "linear algebra"
        ],
        [
          "main diagonal",
          "main diagonal"
        ]
      ],
      "raw_glosses": [
        "(linear algebra) A main diagonal."
      ],
      "topics": [
        "linear-algebra",
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "leading diagonal"
}