"πεντήκοντα" meaning in Oudgrieks

{
  "categories": [
    {
      "kind": "other",
      "name": "Hoofdtelwoord in het Oudgrieks",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Woorden in het Oudgrieks",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Oudgrieks",
  "lang_code": "grc",
  "pos": "num",
  "pos_title": "Hoofdtelwoord",
  "senses": [
    {
      "glosses": [
        "vijftig"
      ],
      "id": "nl-πεντήκοντα-grc-num-X0l6bmnc"
    }
  ],
  "word": "πεντήκοντα"
}

{
  "categories": [
    "Hoofdtelwoord in het Oudgrieks",
    "Woorden in het Oudgrieks"
  ],
  "lang": "Oudgrieks",
  "lang_code": "grc",
  "pos": "num",
  "pos_title": "Hoofdtelwoord",
  "senses": [
    {
      "glosses": [
        "vijftig"
      ]
    }
  ],
  "word": "πεντήκοντα"
}