"9-gon" meaning in English

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      "expansion": "9 + -gon",
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  "etymology_text": "From 9 + -gon.",
  "forms": [
    {
      "form": "9-gons",
      "tags": [
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  "lang_code": "en",
  "pos": "noun",
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        {
          "kind": "topical",
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          "name": "Nine",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Polygons",
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            "Shapes",
            "Geometry",
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
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        }
      ],
      "glosses": [
        "Synonym of enneagon: A polygon with nine sides; a nonagon."
      ],
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          "polygon",
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          "nonagon"
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        "(geometry) Synonym of enneagon: A polygon with nine sides; a nonagon."
      ],
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        {
          "extra": "A polygon with nine sides; a nonagon",
          "tags": [
            "synonym",
            "synonym-of"
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          "word": "enneagon"
        }
      ],
      "topics": [
        "geometry",
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "9-gon"
}

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  "etymology_text": "From 9 + -gon.",
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      "glosses": [
        "Synonym of enneagon: A polygon with nine sides; a nonagon."
      ],
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        "(geometry) Synonym of enneagon: A polygon with nine sides; a nonagon."
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  "word": "9-gon"
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