"hemihedral" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "hemi",
        "3": "hedral"
      },
      "expansion": "hemi- + -hedral",
      "name": "confix"
    }
  ],
  "etymology_text": "From hemi- + -hedral.",
  "head_templates": [
    {
      "args": {
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      "expansion": "hemihedral (not comparable)",
      "name": "en-adj"
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with hemi-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -hedral",
          "parents": [],
          "source": "w"
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        },
        {
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      ],
      "glosses": [
        "Having only half the plane faces needed for the highest degree of symmetry in its system"
      ],
      "id": "en-hemihedral-en-adj-YslbN8mN",
      "links": [
        [
          "face",
          "face"
        ],
        [
          "symmetry",
          "symmetry"
        ]
      ],
      "raw_glosses": [
        "(of a crystal) Having only half the plane faces needed for the highest degree of symmetry in its system"
      ],
      "raw_tags": [
        "of a crystal"
      ],
      "related": [
        {
          "word": "hemihedrite"
        },
        {
          "word": "holohedral"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "hemihedral"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "hemi",
        "3": "hedral"
      },
      "expansion": "hemi- + -hedral",
      "name": "confix"
    }
  ],
  "etymology_text": "From hemi- + -hedral.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "hemihedral (not comparable)",
      "name": "en-adj"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "hemihedrite"
    },
    {
      "word": "holohedral"
    }
  ],
  "senses": [
    {
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      "glosses": [
        "Having only half the plane faces needed for the highest degree of symmetry in its system"
      ],
      "links": [
        [
          "face",
          "face"
        ],
        [
          "symmetry",
          "symmetry"
        ]
      ],
      "raw_glosses": [
        "(of a crystal) Having only half the plane faces needed for the highest degree of symmetry in its system"
      ],
      "raw_tags": [
        "of a crystal"
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "hemihedral"
}