"anzianissimo" meaning in Italian

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "anziano",
        "3": "issimo"
      },
      "expansion": "anziano + -issimo",
      "name": "suffix"
    }
  ],
  "etymology_text": "From anziano + -issimo.",
  "forms": [
    {
      "form": "anzianissima",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "anzianissimi",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "anzianissime",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "anzianissimo (feminine anzianissima, masculine plural anzianissimi, feminine plural anzianissime)",
      "name": "it-adj"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "adj",
  "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 terms suffixed with -issimo",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "very old / aged"
      ],
      "id": "en-anzianissimo-it-adj-UEQmnAaW",
      "links": [
        [
          "old",
          "old"
        ],
        [
          "aged",
          "aged"
        ]
      ]
    }
  ],
  "word": "anzianissimo"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "anziano",
        "3": "issimo"
      },
      "expansion": "anziano + -issimo",
      "name": "suffix"
    }
  ],
  "etymology_text": "From anziano + -issimo.",
  "forms": [
    {
      "form": "anzianissima",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "anzianissimi",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "anzianissime",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "anzianissimo (feminine anzianissima, masculine plural anzianissimi, feminine plural anzianissime)",
      "name": "it-adj"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Italian adjectives",
        "Italian adjectives with red links in their headword lines",
        "Italian entries with incorrect language header",
        "Italian lemmas",
        "Italian terms suffixed with -issimo",
        "Pages with 1 entry"
      ],
      "glosses": [
        "very old / aged"
      ],
      "links": [
        [
          "old",
          "old"
        ],
        [
          "aged",
          "aged"
        ]
      ]
    }
  ],
  "word": "anzianissimo"
}