"retroactividad" meaning in Spanish

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "retroactivo",
        "3": "-idad"
      },
      "expansion": "retroactivo + -idad",
      "name": "af"
    }
  ],
  "etymology_text": "From retroactivo + -idad.",
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "-"
      },
      "expansion": "retroactividad f (uncountable)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish terms suffixed with -idad",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "(please add an English translation of this quotation)",
          "ref": "2015 October 13, “Problemas de encendido”, in El País",
          "text": "No se conoce lo que es emprender con retroactividad, como tampoco los ingleses conjugan la forma start-up con regreso al pasado.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "retroactivity"
      ],
      "id": "en-retroactividad-es-noun-NeHNPIT1",
      "links": [
        [
          "retroactivity",
          "retroactivity"
        ]
      ],
      "tags": [
        "feminine",
        "uncountable"
      ]
    }
  ],
  "word": "retroactividad"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "retroactivo",
        "3": "-idad"
      },
      "expansion": "retroactivo + -idad",
      "name": "af"
    }
  ],
  "etymology_text": "From retroactivo + -idad.",
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "-"
      },
      "expansion": "retroactividad f (uncountable)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Requests for translations of Spanish quotations",
        "Spanish entries with incorrect language header",
        "Spanish feminine nouns",
        "Spanish lemmas",
        "Spanish nouns",
        "Spanish terms suffixed with -idad",
        "Spanish terms with quotations",
        "Spanish uncountable nouns"
      ],
      "examples": [
        {
          "english": "(please add an English translation of this quotation)",
          "ref": "2015 October 13, “Problemas de encendido”, in El País",
          "text": "No se conoce lo que es emprender con retroactividad, como tampoco los ingleses conjugan la forma start-up con regreso al pasado.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "retroactivity"
      ],
      "links": [
        [
          "retroactivity",
          "retroactivity"
        ]
      ],
      "tags": [
        "feminine",
        "uncountable"
      ]
    }
  ],
  "word": "retroactividad"
}