"imaginary axis" meaning in English

{
  "forms": [
    {
      "form": "imaginary axes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "imaginary axes"
      },
      "expansion": "imaginary axis (plural imaginary axes)",
      "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"
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        },
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          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
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        {
          "kind": "other",
          "name": "Japanese terms with redundant script codes",
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            "Terms with redundant script codes",
            "Entry maintenance"
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        {
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        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
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        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
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        },
        {
          "kind": "other",
          "name": "Terms with French translations",
          "parents": [],
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        },
        {
          "kind": "other",
          "name": "Terms with Hungarian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Japanese translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Russian translations",
          "parents": [],
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The vertical line in the complex plane, every point on which corresponds to a complex number having zero real component"
      ],
      "id": "en-imaginary_axis-en-noun-UpfsXvdX",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "vertical",
          "vertical"
        ],
        [
          "line",
          "line"
        ],
        [
          "complex plane",
          "complex plane"
        ],
        [
          "complex number",
          "complex number"
        ],
        [
          "zero",
          "zero"
        ],
        [
          "real",
          "real"
        ]
      ],
      "raw_glosses": [
        "(mathematics) The vertical line in the complex plane, every point on which corresponds to a complex number having zero real component"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "mathematics",
          "word": "imaginaariakseli"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "mathematics",
          "tags": [
            "masculine"
          ],
          "word": "axe imaginaire"
        },
        {
          "code": "hu",
          "lang": "Hungarian",
          "sense": "mathematics",
          "word": "képzetes tengely"
        },
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "kyojiku",
          "sense": "mathematics",
          "word": "虚軸"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "mnímaja osʹ",
          "sense": "mathematics",
          "tags": [
            "feminine"
          ],
          "word": "мни́мая ось"
        }
      ]
    }
  ],
  "word": "imaginary axis"
}

{
  "forms": [
    {
      "form": "imaginary axes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "imaginary axes"
      },
      "expansion": "imaginary axis (plural imaginary axes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "Pages with 1 entry",
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        "Terms with Finnish translations",
        "Terms with French translations",
        "Terms with Hungarian translations",
        "Terms with Japanese translations",
        "Terms with Russian translations",
        "en:Mathematics"
      ],
      "glosses": [
        "The vertical line in the complex plane, every point on which corresponds to a complex number having zero real component"
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "vertical",
          "vertical"
        ],
        [
          "line",
          "line"
        ],
        [
          "complex plane",
          "complex plane"
        ],
        [
          "complex number",
          "complex number"
        ],
        [
          "zero",
          "zero"
        ],
        [
          "real",
          "real"
        ]
      ],
      "raw_glosses": [
        "(mathematics) The vertical line in the complex plane, every point on which corresponds to a complex number having zero real component"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "mathematics",
      "word": "imaginaariakseli"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "mathematics",
      "tags": [
        "masculine"
      ],
      "word": "axe imaginaire"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "sense": "mathematics",
      "word": "képzetes tengely"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "kyojiku",
      "sense": "mathematics",
      "word": "虚軸"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "mnímaja osʹ",
      "sense": "mathematics",
      "tags": [
        "feminine"
      ],
      "word": "мни́мая ось"
    }
  ],
  "word": "imaginary axis"
}