"τῆς" meaning in Ancient Greek

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "el",
            "2": "της"
          },
          "expansion": "Greek: της (tis)",
          "name": "desc"
        }
      ],
      "text": "Greek: της (tis)"
    }
  ],
  "forms": [
    {
      "form": "tês",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "τᾶς",
      "roman": "tâs",
      "tags": [
        "alternative",
        "Aeolic",
        "Doric"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "grc",
        "2": "article form"
      },
      "expansion": "τῆς • (tês)",
      "name": "head"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "article",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Ancient Greek entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Attic Greek",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Epic Greek",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Ionic Greek",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "ho",
          "word": "ὁ"
        }
      ],
      "glosses": [
        "genitive singular feminine of ὁ (ho)"
      ],
      "id": "en-τῆς-grc-article-GMJM-nVo",
      "links": [
        [
          "ὁ",
          "ὁ#Ancient_Greek"
        ]
      ],
      "raw_glosses": [
        "(Attic, Epic, Ionic) genitive singular feminine of ὁ (ho)"
      ],
      "tags": [
        "Attic",
        "Epic",
        "Ionic",
        "feminine",
        "form-of",
        "genitive",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/tɛ̂ːs/"
    },
    {
      "ipa": "/tis/"
    },
    {
      "ipa": "/tis/"
    },
    {
      "ipa": "/tɛ̂ːs/",
      "note": "5ᵗʰ BCE Attic"
    },
    {
      "ipa": "/te̝s/",
      "note": "1ˢᵗ CE Egyptian"
    },
    {
      "ipa": "/tis/",
      "note": "4ᵗʰ CE Koine"
    },
    {
      "ipa": "/tis/",
      "note": "10ᵗʰ CE Byzantine"
    },
    {
      "ipa": "/tis/",
      "note": "15ᵗʰ CE Constantinopolitan"
    }
  ],
  "word": "τῆς"
}

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "el",
            "2": "της"
          },
          "expansion": "Greek: της (tis)",
          "name": "desc"
        }
      ],
      "text": "Greek: της (tis)"
    }
  ],
  "forms": [
    {
      "form": "tês",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "τᾶς",
      "roman": "tâs",
      "tags": [
        "alternative",
        "Aeolic",
        "Doric"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "grc",
        "2": "article form"
      },
      "expansion": "τῆς • (tês)",
      "name": "head"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "article",
  "senses": [
    {
      "categories": [
        "Ancient Greek 1-syllable words",
        "Ancient Greek article forms",
        "Ancient Greek entries with incorrect language header",
        "Ancient Greek non-lemma forms",
        "Ancient Greek terms with IPA pronunciation",
        "Attic Greek",
        "Epic Greek",
        "Ionic Greek",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "form_of": [
        {
          "extra": "ho",
          "word": "ὁ"
        }
      ],
      "glosses": [
        "genitive singular feminine of ὁ (ho)"
      ],
      "links": [
        [
          "ὁ",
          "ὁ#Ancient_Greek"
        ]
      ],
      "raw_glosses": [
        "(Attic, Epic, Ionic) genitive singular feminine of ὁ (ho)"
      ],
      "tags": [
        "Attic",
        "Epic",
        "Ionic",
        "feminine",
        "form-of",
        "genitive",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/tɛ̂ːs/"
    },
    {
      "ipa": "/tis/"
    },
    {
      "ipa": "/tis/"
    },
    {
      "ipa": "/tɛ̂ːs/",
      "note": "5ᵗʰ BCE Attic"
    },
    {
      "ipa": "/te̝s/",
      "note": "1ˢᵗ CE Egyptian"
    },
    {
      "ipa": "/tis/",
      "note": "4ᵗʰ CE Koine"
    },
    {
      "ipa": "/tis/",
      "note": "10ᵗʰ CE Byzantine"
    },
    {
      "ipa": "/tis/",
      "note": "15ᵗʰ CE Constantinopolitan"
    }
  ],
  "word": "τῆς"
}