"diffondendosi" meaning in Italian

{
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "gerund"
      },
      "expansion": "diffondendosi",
      "name": "head"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "diffondersi"
        }
      ],
      "glosses": [
        "gerund of diffondersi"
      ],
      "id": "en-diffondendosi-it-verb-tcT339G3",
      "links": [
        [
          "diffondersi",
          "diffondersi#Italian"
        ]
      ],
      "related": [
        {
          "word": "diffondendomi"
        },
        {
          "word": "diffondendoti"
        },
        {
          "word": "diffondendoci"
        },
        {
          "word": "diffondendovi"
        }
      ],
      "tags": [
        "form-of",
        "gerund"
      ]
    }
  ],
  "word": "diffondendosi"
}

{
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "gerund"
      },
      "expansion": "diffondendosi",
      "name": "head"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "verb",
  "related": [
    {
      "word": "diffondendomi"
    },
    {
      "word": "diffondendoti"
    },
    {
      "word": "diffondendoci"
    },
    {
      "word": "diffondendovi"
    }
  ],
  "senses": [
    {
      "categories": [
        "Italian entries with incorrect language header",
        "Italian gerunds",
        "Italian non-lemma forms"
      ],
      "form_of": [
        {
          "word": "diffondersi"
        }
      ],
      "glosses": [
        "gerund of diffondersi"
      ],
      "links": [
        [
          "diffondersi",
          "diffondersi#Italian"
        ]
      ],
      "tags": [
        "form-of",
        "gerund"
      ]
    }
  ],
  "word": "diffondendosi"
}