"στις" meaning in Grec

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes d’articles définis en grec",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Grec",
      "orig": "grec",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "De σε et τις."
  ],
  "lang": "Grec",
  "lang_code": "el",
  "pos": "article",
  "pos_title": "Forme d’article défini",
  "senses": [
    {
      "examples": [
        {
          "text": "Πηγαίνω στιςΗΠΑ.",
          "translation": "Je vais aux États-Unis."
        }
      ],
      "form_of": [
        {
          "word": "τις"
        }
      ],
      "glosses": [
        "Article contracté au féminin pluriel, contraction obligatoire de σε et τις."
      ],
      "id": "fr-στις-el-article-LqbBWm~R"
    }
  ],
  "sounds": [
    {
      "ipa": "\\stis\\"
    }
  ],
  "tags": [
    "definite",
    "form-of"
  ],
  "word": "στις"
}

{
  "categories": [
    "Formes d’articles définis en grec",
    "grec"
  ],
  "etymology_texts": [
    "De σε et τις."
  ],
  "lang": "Grec",
  "lang_code": "el",
  "pos": "article",
  "pos_title": "Forme d’article défini",
  "senses": [
    {
      "examples": [
        {
          "text": "Πηγαίνω στιςΗΠΑ.",
          "translation": "Je vais aux États-Unis."
        }
      ],
      "form_of": [
        {
          "word": "τις"
        }
      ],
      "glosses": [
        "Article contracté au féminin pluriel, contraction obligatoire de σε et τις."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\stis\\"
    }
  ],
  "tags": [
    "definite",
    "form-of"
  ],
  "word": "στις"
}