"main diagonal" meaning in English

See main diagonal in All languages combined, or Wiktionary

Noun

Forms: main diagonals [plural]
Head templates: {{en-noun}} main diagonal (plural main diagonals)
  1. (linear algebra) The entries of a square matrix from the top left to the bottom right. Wikipedia link: main diagonal Synonyms: leading diagonal, primary diagonal, major diagonal, good diagonal Related terms: offdiagonal Translations (Translations): hlavní diagonála [feminine] (Czech), peadiagonaal (Estonian), päälävistäjä (Finnish), diagonale principale [feminine] (French), főátló (Hungarian), aðalhornalína [feminine] (Icelandic), meginhornalína [feminine] (Icelandic), diagonale principale [feminine] (Italian), 主対角 (shutaikaku) (Japanese), przekątna główna [feminine] (Polish), diagonal principal [feminine] (Portuguese), гла́вная диагона́ль (glávnaja diagonálʹ) [feminine] (Russian), diagonal principal [feminine] (Spanish), huvuddiagonal [common-gender] (Swedish)

Inflected forms

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          "text": "In a diagonal matrix, non-zero elements appear only in the main diagonal.",
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        "The entries of a square matrix from the top left to the bottom right."
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      "id": "en-main_diagonal-en-noun-0IH3N~o5",
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        "(linear algebra) The entries of a square matrix from the top left to the bottom right."
      ],
      "related": [
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      ],
      "synonyms": [
        {
          "word": "leading diagonal"
        },
        {
          "word": "primary diagonal"
        },
        {
          "word": "major diagonal"
        },
        {
          "word": "good diagonal"
        }
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      "translations": [
        {
          "code": "cs",
          "lang": "Czech",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "hlavní diagonála"
        },
        {
          "code": "et",
          "lang": "Estonian",
          "sense": "Translations",
          "word": "peadiagonaal"
        },
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          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "päälävistäjä"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "diagonale principale"
        },
        {
          "code": "hu",
          "lang": "Hungarian",
          "sense": "Translations",
          "word": "főátló"
        },
        {
          "code": "is",
          "lang": "Icelandic",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "aðalhornalína"
        },
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          "word": "meginhornalína"
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          "code": "it",
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          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "diagonale principale"
        },
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          "sense": "Translations",
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          "code": "pt",
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          "tags": [
            "feminine"
          ],
          "word": "diagonal principal"
        },
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          "code": "ru",
          "lang": "Russian",
          "roman": "glávnaja diagonálʹ",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "гла́вная диагона́ль"
        },
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          "code": "es",
          "lang": "Spanish",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "diagonal principal"
        },
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          "code": "sv",
          "lang": "Swedish",
          "sense": "Translations",
          "tags": [
            "common-gender"
          ],
          "word": "huvuddiagonal"
        }
      ],
      "wikipedia": [
        "main diagonal"
      ]
    }
  ],
  "word": "main diagonal"
}
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          "word": "leading diagonal"
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      "code": "cs",
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      "word": "hlavní diagonála"
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      "code": "et",
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      "sense": "Translations",
      "word": "peadiagonaal"
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    },
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      "code": "it",
      "lang": "Italian",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "diagonale principale"
    },
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      "sense": "Translations",
      "word": "主対角"
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      "tags": [
        "feminine"
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      "word": "diagonal principal"
    },
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      "code": "ru",
      "lang": "Russian",
      "roman": "glávnaja diagonálʹ",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "гла́вная диагона́ль"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "diagonal principal"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "Translations",
      "tags": [
        "common-gender"
      ],
      "word": "huvuddiagonal"
    }
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  "word": "main diagonal"
}

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This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2025-08-04 from the enwiktionary dump dated 2025-08-02 using wiktextract (a681f8a and 3c020d2). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

If you use this data in academic research, please cite Tatu Ylonen: Wiktextract: Wiktionary as Machine-Readable Structured Data, Proceedings of the 13th Conference on Language Resources and Evaluation (LREC), pp. 1317-1325, Marseille, 20-25 June 2022. Linking to the relevant page(s) under https://kaikki.org would also be greatly appreciated.