"-ιστος" meaning in Grec ancien

{
  "categories": [
    {
      "kind": "other",
      "name": "Suffixes en grec ancien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Grec ancien",
      "orig": "grec ancien",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Apparenté à -est en anglais."
  ],
  "lang": "Grec ancien",
  "lang_code": "grc",
  "pos": "suffix",
  "pos_title": "Suffixe",
  "raw_tags": [
    "-ιστος, -istos"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en grec ancien",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Suffixe servant à construire des superlatifs."
      ],
      "id": "fr--ιστος-grc-suffix-1zkCQ26S"
    }
  ],
  "tags": [
    "morpheme"
  ],
  "word": "-ιστος"
}

{
  "categories": [
    "Suffixes en grec ancien",
    "grec ancien"
  ],
  "etymology_texts": [
    "Apparenté à -est en anglais."
  ],
  "lang": "Grec ancien",
  "lang_code": "grc",
  "pos": "suffix",
  "pos_title": "Suffixe",
  "raw_tags": [
    "-ιστος, -istos"
  ],
  "senses": [
    {
      "categories": [
        "Wiktionnaire:Exemples manquants en grec ancien"
      ],
      "glosses": [
        "Suffixe servant à construire des superlatifs."
      ]
    }
  ],
  "tags": [
    "morpheme"
  ],
  "word": "-ιστος"
}