"θ΄" meaning in Greek

{
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "numeral",
        "tr": "-"
      },
      "expansion": "θ΄",
      "name": "head"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "num",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Θ΄"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Greek entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "name": "Greek numeral symbols",
          "parents": [
            "Numeral symbols",
            "Symbols",
            "Letters, symbols, and punctuation",
            "Orthography",
            "Writing",
            "Human behaviour",
            "Language",
            "Human",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of Θ΄"
      ],
      "id": "en-θ΄-el-num-FHs~dvk0",
      "links": [
        [
          "Θ΄",
          "Θ΄#Greek"
        ]
      ],
      "raw_glosses": [
        "(nonstandard) Alternative form of Θ΄"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "nonstandard"
      ],
      "wikipedia": [
        "Greek numerals"
      ]
    }
  ],
  "word": "θ΄"
}

{
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "numeral",
        "tr": "-"
      },
      "expansion": "θ΄",
      "name": "head"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "num",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Θ΄"
        }
      ],
      "categories": [
        "Greek entries with incorrect language header",
        "Greek entries with language name categories using raw markup",
        "Greek lemmas",
        "Greek nonstandard terms",
        "Greek numeral symbols",
        "Greek numerals"
      ],
      "glosses": [
        "Alternative form of Θ΄"
      ],
      "links": [
        [
          "Θ΄",
          "Θ΄#Greek"
        ]
      ],
      "raw_glosses": [
        "(nonstandard) Alternative form of Θ΄"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "nonstandard"
      ],
      "wikipedia": [
        "Greek numerals"
      ]
    }
  ],
  "word": "θ΄"
}