"-ისტი" meaning in Georgian

{
  "forms": [
    {
      "form": "-isṭi",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ka",
        "2": "suffix"
      },
      "expansion": "-ისტი • (-isṭi)",
      "name": "head"
    }
  ],
  "lang": "Georgian",
  "lang_code": "ka",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Entries with collapsible category trees for nonexistent categories",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Georgian entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "-ist"
      ],
      "id": "en--ისტი-ka-suffix-NrUo8fUR",
      "links": [
        [
          "-ist",
          "-ist"
        ]
      ],
      "related": [
        {
          "roman": "-osi",
          "word": "-ოსი"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[istʼi]"
    }
  ],
  "word": "-ისტი"
}

{
  "forms": [
    {
      "form": "-isṭi",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ka",
        "2": "suffix"
      },
      "expansion": "-ისტი • (-isṭi)",
      "name": "head"
    }
  ],
  "lang": "Georgian",
  "lang_code": "ka",
  "pos": "suffix",
  "related": [
    {
      "roman": "-osi",
      "word": "-ოსი"
    }
  ],
  "senses": [
    {
      "categories": [
        "Entries with collapsible category trees for nonexistent categories",
        "Georgian entries with incorrect language header",
        "Georgian lemmas",
        "Georgian suffixes",
        "Georgian terms with IPA pronunciation",
        "Pages using catfix",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "-ist"
      ],
      "links": [
        [
          "-ist",
          "-ist"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[istʼi]"
    }
  ],
  "word": "-ისტი"
}