"real part" meaning in English

{
  "antonyms": [
    {
      "word": "imaginary part"
    }
  ],
  "forms": [
    {
      "form": "real parts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "real part (plural real parts)",
      "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": "Complex analysis",
          "orig": "en:Complex analysis",
          "parents": [
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Of a complex number a + bi, the value a."
      ],
      "id": "en-real_part-en-noun-MfMRYndZ",
      "links": [
        [
          "complex analysis",
          "complex analysis"
        ],
        [
          "complex number",
          "complex number"
        ]
      ],
      "raw_glosses": [
        "(complex analysis) Of a complex number a + bi, the value a."
      ],
      "topics": [
        "complex-analysis",
        "mathematics",
        "sciences"
      ],
      "translations": [
        {
          "code": "da",
          "lang": "Danish",
          "sense": "of complex number",
          "tags": [
            "common-gender"
          ],
          "word": "reel del"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "of complex number",
          "word": "reaaliosa"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "of complex number",
          "tags": [
            "feminine"
          ],
          "word": "partie réelle"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "of complex number",
          "tags": [
            "masculine"
          ],
          "word": "Realteil"
        },
        {
          "code": "hu",
          "lang": "Hungarian",
          "sense": "of complex number",
          "word": "valós rész"
        },
        {
          "alt": "じつぶ",
          "code": "ja",
          "lang": "Japanese",
          "roman": "jitsubu",
          "sense": "of complex number",
          "word": "実部"
        },
        {
          "alt": "じっすうぶ",
          "code": "ja",
          "lang": "Japanese",
          "roman": "jissūbu",
          "sense": "of complex number",
          "word": "実数部"
        },
        {
          "code": "ro",
          "lang": "Romanian",
          "sense": "of complex number",
          "tags": [
            "feminine"
          ],
          "word": "parte reală"
        }
      ],
      "wikipedia": [
        "real part"
      ]
    }
  ],
  "word": "real part"
}

{
  "antonyms": [
    {
      "word": "imaginary part"
    }
  ],
  "forms": [
    {
      "form": "real parts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "real part (plural real parts)",
      "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",
        "en:Complex analysis"
      ],
      "glosses": [
        "Of a complex number a + bi, the value a."
      ],
      "links": [
        [
          "complex analysis",
          "complex analysis"
        ],
        [
          "complex number",
          "complex number"
        ]
      ],
      "raw_glosses": [
        "(complex analysis) Of a complex number a + bi, the value a."
      ],
      "topics": [
        "complex-analysis",
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "real part"
      ]
    }
  ],
  "translations": [
    {
      "code": "da",
      "lang": "Danish",
      "sense": "of complex number",
      "tags": [
        "common-gender"
      ],
      "word": "reel del"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "of complex number",
      "word": "reaaliosa"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "of complex number",
      "tags": [
        "feminine"
      ],
      "word": "partie réelle"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "of complex number",
      "tags": [
        "masculine"
      ],
      "word": "Realteil"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "sense": "of complex number",
      "word": "valós rész"
    },
    {
      "alt": "じつぶ",
      "code": "ja",
      "lang": "Japanese",
      "roman": "jitsubu",
      "sense": "of complex number",
      "word": "実部"
    },
    {
      "alt": "じっすうぶ",
      "code": "ja",
      "lang": "Japanese",
      "roman": "jissūbu",
      "sense": "of complex number",
      "word": "実数部"
    },
    {
      "code": "ro",
      "lang": "Romanian",
      "sense": "of complex number",
      "tags": [
        "feminine"
      ],
      "word": "parte reală"
    }
  ],
  "word": "real part"
}