"dihedral group" meaning in All languages combined

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        "2": "-hedron"
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  "etymology_text": "From di- and -hedron; so called because the polygon, when it can be reflected along certain axes of symmetry, has two faces: its upper side and its underside.",
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      "form": "dihedral groups",
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      "expansion": "dihedral group (plural dihedral groups)",
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "a group of symmetries of a regular polygon"
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        "(group theory) a group of symmetries of a regular polygon"
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        "dihedral group"
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  "word": "dihedral group"
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  "etymology_text": "From di- and -hedron; so called because the polygon, when it can be reflected along certain axes of symmetry, has two faces: its upper side and its underside.",
  "forms": [
    {
      "form": "dihedral groups",
      "tags": [
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        "a group of symmetries of a regular polygon"
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        "(group theory) a group of symmetries of a regular polygon"
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