"preciosíssimo" meaning in Portuguese

{
  "etymology_templates": [
    {
      "args": {
        "1": "pt",
        "2": "precioso",
        "3": "-íssimo"
      },
      "expansion": "precioso + -íssimo",
      "name": "af"
    }
  ],
  "etymology_text": "From precioso + -íssimo.",
  "forms": [
    {
      "form": "preciosíssima",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "preciosíssimos",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "preciosíssimas",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Portuguese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Portuguese terms suffixed with -íssimo",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "precioso"
        }
      ],
      "glosses": [
        "superlative degree of precioso"
      ],
      "id": "en-preciosíssimo-pt-adj-~BrIwkS4",
      "links": [
        [
          "precioso",
          "precioso#Portuguese"
        ]
      ],
      "tags": [
        "form-of",
        "superlative"
      ]
    }
  ],
  "word": "preciosíssimo"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "pt",
        "2": "precioso",
        "3": "-íssimo"
      },
      "expansion": "precioso + -íssimo",
      "name": "af"
    }
  ],
  "etymology_text": "From precioso + -íssimo.",
  "forms": [
    {
      "form": "preciosíssima",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "preciosíssimos",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "preciosíssimas",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Portuguese adjectives",
        "Portuguese entries with incorrect language header",
        "Portuguese lemmas",
        "Portuguese superlative adjectives",
        "Portuguese terms suffixed with -íssimo"
      ],
      "form_of": [
        {
          "word": "precioso"
        }
      ],
      "glosses": [
        "superlative degree of precioso"
      ],
      "links": [
        [
          "precioso",
          "precioso#Portuguese"
        ]
      ],
      "tags": [
        "form-of",
        "superlative"
      ]
    }
  ],
  "word": "preciosíssimo"
}