"ὀγδοάς" meaning in Ancient Greek

{
  "etymology_templates": [
    {
      "args": {
        "1": "grc",
        "2": "-ᾰ́ς"
      },
      "expansion": "-ᾰ́ς (-ás)",
      "name": "af"
    }
  ],
  "etymology_text": "From ὄγδοος (ógdoos) (from ὀκτώ (oktṓ)) + -ᾰ́ς (-ás).",
  "forms": [
    {
      "form": "ogdoás",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ὀγδοάδος",
      "tags": [
        "genitive"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ὀγδοάδος",
        "2": "f",
        "3": "third"
      },
      "expansion": "ὀγδοάς • (ogdoás) f (genitive ὀγδοάδος); third declension",
      "name": "grc-noun"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "86 14",
          "kind": "other",
          "name": "Ancient Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "72 28",
          "kind": "other",
          "name": "Ancient Greek feminine nouns in the third declension",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "75 25",
          "kind": "other",
          "name": "Ancient Greek terms suffixed with -άς",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "91 9",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "91 9",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The number eight"
      ],
      "id": "en-ὀγδοάς-grc-noun-4MuTP07F",
      "links": [
        [
          "eight",
          "eight"
        ]
      ]
    },
    {
      "glosses": [
        "A group of eight"
      ],
      "id": "en-ὀγδοάς-grc-noun-uYX4dOUT"
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0",
      "roman": "oktás",
      "word": "ὀκτάς"
    }
  ],
  "word": "ὀγδοάς"
}

{
  "categories": [
    "Ancient Greek entries with incorrect language header",
    "Ancient Greek feminine nouns",
    "Ancient Greek feminine nouns in the third declension",
    "Ancient Greek lemmas",
    "Ancient Greek nouns",
    "Ancient Greek oxytone terms",
    "Ancient Greek terms suffixed with -άς",
    "Ancient Greek third-declension nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "grc",
        "2": "-ᾰ́ς"
      },
      "expansion": "-ᾰ́ς (-ás)",
      "name": "af"
    }
  ],
  "etymology_text": "From ὄγδοος (ógdoos) (from ὀκτώ (oktṓ)) + -ᾰ́ς (-ás).",
  "forms": [
    {
      "form": "ogdoás",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ὀγδοάδος",
      "tags": [
        "genitive"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ὀγδοάδος",
        "2": "f",
        "3": "third"
      },
      "expansion": "ὀγδοάς • (ogdoás) f (genitive ὀγδοάδος); third declension",
      "name": "grc-noun"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "The number eight"
      ],
      "links": [
        [
          "eight",
          "eight"
        ]
      ]
    },
    {
      "glosses": [
        "A group of eight"
      ]
    }
  ],
  "synonyms": [
    {
      "roman": "oktás",
      "word": "ὀκτάς"
    }
  ],
  "word": "ὀγδοάς"
}