"retrovirus" meaning in Italian

{
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    {
      "args": {
        "1": "it",
        "2": "en",
        "3": "-"
      },
      "expansion": "English",
      "name": "uder"
    },
    {
      "args": {
        "1": "it",
        "2": "retro",
        "3": "virus"
      },
      "expansion": "retro- + virus",
      "name": "prefix"
    }
  ],
  "etymology_text": "From English retro- + virus.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "#"
      },
      "expansion": "retrovirus m (invariable)",
      "name": "it-noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "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 prefixed with retro-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Italian undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "retrovirus"
      ],
      "id": "en-retrovirus-it-noun-OHOU-O1n",
      "links": [
        [
          "retrovirus",
          "retrovirus#English"
        ]
      ],
      "tags": [
        "invariable",
        "masculine"
      ]
    }
  ],
  "word": "retrovirus"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "en",
        "3": "-"
      },
      "expansion": "English",
      "name": "uder"
    },
    {
      "args": {
        "1": "it",
        "2": "retro",
        "3": "virus"
      },
      "expansion": "retro- + virus",
      "name": "prefix"
    }
  ],
  "etymology_text": "From English retro- + virus.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "#"
      },
      "expansion": "retrovirus m (invariable)",
      "name": "it-noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Italian countable nouns",
        "Italian entries with incorrect language header",
        "Italian indeclinable nouns",
        "Italian lemmas",
        "Italian masculine nouns",
        "Italian nouns",
        "Italian terms derived from English",
        "Italian terms prefixed with retro-",
        "Italian undefined derivations"
      ],
      "glosses": [
        "retrovirus"
      ],
      "links": [
        [
          "retrovirus",
          "retrovirus#English"
        ]
      ],
      "tags": [
        "invariable",
        "masculine"
      ]
    }
  ],
  "word": "retrovirus"
}