"ur-source" meaning in English

{
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    {
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        "1": "en",
        "2": "ur-",
        "3": "source"
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      "expansion": "ur- + source",
      "name": "af"
    }
  ],
  "etymology_text": "From ur- + source.",
  "forms": [
    {
      "form": "ur-sources",
      "tags": [
        "plural"
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      "expansion": "ur-source (plural ur-sources)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "kind": "other",
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          "parents": [],
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      "examples": [
        {
          "ref": "2016, Adrian Howkins, Jared Orsi, Mark Fiege, National Parks beyond the Nation:",
          "text": "If this lecture is indeed the ur-source of “America's Best Idea,” it is ironic that Bryce's flattery has been remembered, even streamlined, while the rest of his address has been entirely forgotten.",
          "type": "quote"
        },
        {
          "ref": "2017, Euny Hong, Please stop saying the Japanese are descended from Koreans:",
          "text": "For one thing, all the articles seemed to be traceable to a single ur-source, an article in Yonhap news (link in Korean).",
          "type": "quote"
        }
      ],
      "glosses": [
        "An original source."
      ],
      "id": "en-ur-source-en-noun-DMGg3R7p",
      "links": [
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          "original",
          "original"
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        [
          "source",
          "source"
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    }
  ],
  "word": "ur-source"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ur-",
        "3": "source"
      },
      "expansion": "ur- + source",
      "name": "af"
    }
  ],
  "etymology_text": "From ur- + source.",
  "forms": [
    {
      "form": "ur-sources",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ur-source (plural ur-sources)",
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  "lang_code": "en",
  "pos": "noun",
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        "Pages with 1 entry",
        "Pages with entries",
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      "examples": [
        {
          "ref": "2016, Adrian Howkins, Jared Orsi, Mark Fiege, National Parks beyond the Nation:",
          "text": "If this lecture is indeed the ur-source of “America's Best Idea,” it is ironic that Bryce's flattery has been remembered, even streamlined, while the rest of his address has been entirely forgotten.",
          "type": "quote"
        },
        {
          "ref": "2017, Euny Hong, Please stop saying the Japanese are descended from Koreans:",
          "text": "For one thing, all the articles seemed to be traceable to a single ur-source, an article in Yonhap news (link in Korean).",
          "type": "quote"
        }
      ],
      "glosses": [
        "An original source."
      ],
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          "source"
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    }
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  "word": "ur-source"
}