"regresión" meaning in Spanish

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "la",
        "3": "regressio",
        "4": "regressiōnem"
      },
      "expansion": "Latin regressiōnem",
      "name": "der"
    }
  ],
  "etymology_text": "From Latin regressiōnem.",
  "forms": [
    {
      "form": "regresiones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "regresión f (plural regresiones)",
      "name": "es-noun"
    }
  ],
  "hyphenation": [
    "re‧gre‧sión"
  ],
  "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"
        }
      ],
      "glosses": [
        "setback, regression"
      ],
      "id": "en-regresión-es-noun-xViV3CbP",
      "links": [
        [
          "setback",
          "setback"
        ],
        [
          "regression",
          "regression"
        ]
      ],
      "related": [
        {
          "word": "regresar"
        },
        {
          "word": "regreso"
        }
      ],
      "synonyms": [
        {
          "word": "retroceso"
        }
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/reɡɾeˈsjon/"
    },
    {
      "ipa": "[re.ɣ̞ɾeˈsjõn]"
    },
    {
      "rhymes": "-on"
    }
  ],
  "word": "regresión"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "la",
        "3": "regressio",
        "4": "regressiōnem"
      },
      "expansion": "Latin regressiōnem",
      "name": "der"
    }
  ],
  "etymology_text": "From Latin regressiōnem.",
  "forms": [
    {
      "form": "regresiones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "regresión f (plural regresiones)",
      "name": "es-noun"
    }
  ],
  "hyphenation": [
    "re‧gre‧sión"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "related": [
    {
      "word": "regresar"
    },
    {
      "word": "regreso"
    }
  ],
  "senses": [
    {
      "categories": [
        "Rhymes:Spanish/on",
        "Rhymes:Spanish/on/3 syllables",
        "Spanish 3-syllable words",
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish feminine nouns",
        "Spanish lemmas",
        "Spanish nouns",
        "Spanish terms derived from Latin",
        "Spanish terms with IPA pronunciation"
      ],
      "glosses": [
        "setback, regression"
      ],
      "links": [
        [
          "setback",
          "setback"
        ],
        [
          "regression",
          "regression"
        ]
      ],
      "synonyms": [
        {
          "word": "retroceso"
        }
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/reɡɾeˈsjon/"
    },
    {
      "ipa": "[re.ɣ̞ɾeˈsjõn]"
    },
    {
      "rhymes": "-on"
    }
  ],
  "word": "regresión"
}