"conversion rate" meaning in English

{
  "forms": [
    {
      "form": "conversion rates",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "conversion rate (plural conversion rates)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Marketing",
          "orig": "en:Marketing",
          "parents": [
            "Business",
            "Economics",
            "Society",
            "Social sciences",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The proportion of visitors to a website who take an action desired by the marketers, such as buying a product or subscribing to a newsletter."
      ],
      "id": "en-conversion_rate-en-noun-oMGwqySr",
      "links": [
        [
          "marketing",
          "marketing#Noun"
        ],
        [
          "website",
          "website"
        ]
      ],
      "raw_glosses": [
        "(marketing) The proportion of visitors to a website who take an action desired by the marketers, such as buying a product or subscribing to a newsletter."
      ],
      "topics": [
        "business",
        "marketing"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "taux de transformation"
        }
      ],
      "wikipedia": [
        "conversion rate"
      ]
    }
  ],
  "word": "conversion rate"
}

{
  "forms": [
    {
      "form": "conversion rates",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "conversion rate (plural conversion rates)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Translation table header lacks gloss",
        "en:Marketing"
      ],
      "glosses": [
        "The proportion of visitors to a website who take an action desired by the marketers, such as buying a product or subscribing to a newsletter."
      ],
      "links": [
        [
          "marketing",
          "marketing#Noun"
        ],
        [
          "website",
          "website"
        ]
      ],
      "raw_glosses": [
        "(marketing) The proportion of visitors to a website who take an action desired by the marketers, such as buying a product or subscribing to a newsletter."
      ],
      "topics": [
        "business",
        "marketing"
      ],
      "wikipedia": [
        "conversion rate"
      ]
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "taux de transformation"
    }
  ],
  "word": "conversion rate"
}