"主たる" meaning in Japanese

{
  "etymology_templates": [
    {
      "args": {
        "1": "主",
        "2": "しゅ"
      },
      "expansion": "主(しゅ) (shu)",
      "name": "ja-r"
    },
    {
      "args": {
        "1": "たり"
      },
      "expansion": "たり (tari)",
      "name": "ja-r"
    },
    {
      "args": {
        "1": "たる",
        "pos": "prenominal of the archaic copular たり (<i>tari</i>)"
      },
      "expansion": "たる (taru, prenominal of the archaic copular たり (tari))",
      "name": "ja-r"
    }
  ],
  "etymology_text": "Fossilization of 主(しゅ) (shu) + たる (taru, prenominal of the archaic copular たり (tari)).",
  "forms": [
    {
      "form": "主たる",
      "ruby": [
        [
          "主",
          "しゅ"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "shu taru",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "adnominal",
        "2": "しゅ たる"
      },
      "expansion": "主(しゅ)たる • (shu taru)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "adnominal",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese adnominals",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms read with on'yomi",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 1 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with Atamadaka pitch accent (Tōkyō)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with Nakadaka pitch accent (Tōkyō)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with multiple readings",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "primary; main"
      ],
      "id": "en-主たる-ja-adnominal-pKTum01r",
      "links": [
        [
          "primary",
          "primary"
        ],
        [
          "main",
          "main"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "other": "しゅたる"
    },
    {
      "other": "しゅたる"
    },
    {
      "ipa": "[ɕɨ ta̠ɾɯ̟]"
    }
  ],
  "word": "主たる"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "主",
        "2": "しゅ"
      },
      "expansion": "主(しゅ) (shu)",
      "name": "ja-r"
    },
    {
      "args": {
        "1": "たり"
      },
      "expansion": "たり (tari)",
      "name": "ja-r"
    },
    {
      "args": {
        "1": "たる",
        "pos": "prenominal of the archaic copular たり (<i>tari</i>)"
      },
      "expansion": "たる (taru, prenominal of the archaic copular たり (tari))",
      "name": "ja-r"
    }
  ],
  "etymology_text": "Fossilization of 主(しゅ) (shu) + たる (taru, prenominal of the archaic copular たり (tari)).",
  "forms": [
    {
      "form": "主たる",
      "ruby": [
        [
          "主",
          "しゅ"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "shu taru",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "adnominal",
        "2": "しゅ たる"
      },
      "expansion": "主(しゅ)たる • (shu taru)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "adnominal",
  "senses": [
    {
      "categories": [
        "Japanese adnominals",
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese terms read with on'yomi",
        "Japanese terms spelled with third grade kanji",
        "Japanese terms spelled with 主 read as しゅ",
        "Japanese terms with 1 kanji",
        "Japanese terms with Atamadaka pitch accent (Tōkyō)",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with IPA pronunciation with pitch accent",
        "Japanese terms with Nakadaka pitch accent (Tōkyō)",
        "Japanese terms with multiple readings",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with redundant sortkeys",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "primary; main"
      ],
      "links": [
        [
          "primary",
          "primary"
        ],
        [
          "main",
          "main"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "other": "しゅたる"
    },
    {
      "other": "しゅたる"
    },
    {
      "ipa": "[ɕɨ ta̠ɾɯ̟]"
    }
  ],
  "word": "主たる"
}