"four-thousandth" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "four-thousandth (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "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 links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "name": "English ordinal numbers",
          "parents": [
            "Ordinal numbers",
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "The ordinal form of the number four thousand."
      ],
      "id": "en-four-thousandth-en-adj-miYNxf3P",
      "links": [
        [
          "four thousand",
          "four thousand"
        ]
      ],
      "synonyms": [
        {
          "word": "4000th"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "four-thousandth"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "four-thousandth (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English links with redundant alt parameters",
        "English multiword terms",
        "English ordinal numbers",
        "English uncomparable adjectives",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "The ordinal form of the number four thousand."
      ],
      "links": [
        [
          "four thousand",
          "four thousand"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "4000th"
    }
  ],
  "word": "four-thousandth"
}