"εφτακόσια" meaning in Greek

{
  "forms": [
    {
      "form": "eftakósia",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "numeral",
        "cat2": "numerals",
        "head": "",
        "sort": ""
      },
      "expansion": "εφτακόσια • (eftakósia)",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "εφτακόσια • (eftakósia)",
      "name": "el-numeral"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "num",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "eptakósia",
          "word": "επτακόσια"
        }
      ],
      "categories": [
        {
          "kind": "topical",
          "name": "Greek cardinal numbers",
          "parents": [
            "Cardinal numbers",
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of επτακόσια (eptakósia)"
      ],
      "id": "en-εφτακόσια-el-num-TH0D3~76",
      "links": [
        [
          "επτακόσια",
          "επτακόσια#Greek"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "εφτακόσια"
}

{
  "forms": [
    {
      "form": "eftakósia",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "numeral",
        "cat2": "numerals",
        "head": "",
        "sort": ""
      },
      "expansion": "εφτακόσια • (eftakósia)",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "εφτακόσια • (eftakósia)",
      "name": "el-numeral"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "num",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "eptakósia",
          "word": "επτακόσια"
        }
      ],
      "categories": [
        "Greek cardinal numbers",
        "Greek entries with incorrect language header",
        "Greek lemmas",
        "Greek numerals",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Alternative form of επτακόσια (eptakósia)"
      ],
      "links": [
        [
          "επτακόσια",
          "επτακόσια#Greek"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "εφτακόσια"
}