"desired effect" meaning in English

{
  "antonyms": [
    {
      "word": "adverse effect"
    }
  ],
  "forms": [
    {
      "form": "desired effects",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "desired effect (plural desired effects)",
      "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": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sciences",
          "orig": "en:Sciences",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A side effect, especially a positive one in pharmacology."
      ],
      "id": "en-desired_effect-en-noun-dmNiSvTU",
      "links": [
        [
          "sciences",
          "sciences"
        ],
        [
          "side effect",
          "side effect"
        ],
        [
          "pharmacology",
          "pharmacology"
        ]
      ],
      "raw_glosses": [
        "(sciences) A side effect, especially a positive one in pharmacology."
      ],
      "related": [
        {
          "word": "pleiotropy"
        }
      ],
      "topics": [
        "sciences"
      ]
    }
  ],
  "word": "desired effect"
}

{
  "antonyms": [
    {
      "word": "adverse effect"
    }
  ],
  "forms": [
    {
      "form": "desired effects",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "desired effect (plural desired effects)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "pleiotropy"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Sciences"
      ],
      "glosses": [
        "A side effect, especially a positive one in pharmacology."
      ],
      "links": [
        [
          "sciences",
          "sciences"
        ],
        [
          "side effect",
          "side effect"
        ],
        [
          "pharmacology",
          "pharmacology"
        ]
      ],
      "raw_glosses": [
        "(sciences) A side effect, especially a positive one in pharmacology."
      ],
      "topics": [
        "sciences"
      ]
    }
  ],
  "word": "desired effect"
}