"-isc-" meaning in Italian

{
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "interfix"
      },
      "expansion": "-isc-",
      "name": "head"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "interfix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Italian interfixes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "capire (“to understand”) + -isc- → capisco (“I understand”)",
          "type": "example"
        }
      ],
      "glosses": [
        "used with some -ire verbs to make the present stem"
      ],
      "id": "en--isc--it-interfix-okQLt6qA",
      "links": [
        [
          "-ire",
          "-ire#Italian"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/-ˈiʃ.ʃ-/",
      "note": "before front vowels"
    },
    {
      "ipa": "/-ˈis.k-/",
      "note": "elsewhere"
    }
  ],
  "word": "-isc-"
}

{
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "interfix"
      },
      "expansion": "-isc-",
      "name": "head"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "interfix",
  "senses": [
    {
      "categories": [
        "Italian entries with incorrect language header",
        "Italian interfixes",
        "Italian lemmas",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "text": "capire (“to understand”) + -isc- → capisco (“I understand”)",
          "type": "example"
        }
      ],
      "glosses": [
        "used with some -ire verbs to make the present stem"
      ],
      "links": [
        [
          "-ire",
          "-ire#Italian"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/-ˈiʃ.ʃ-/",
      "note": "before front vowels"
    },
    {
      "ipa": "/-ˈis.k-/",
      "note": "elsewhere"
    }
  ],
  "word": "-isc-"
}