"protecting groups" meaning in All languages combined

{
  "head_templates": [
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      "args": {
        "1": "en",
        "2": "noun form"
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      "expansion": "protecting groups",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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      ],
      "form_of": [
        {
          "word": "protecting group"
        }
      ],
      "glosses": [
        "plural of protecting group"
      ],
      "id": "en-protecting_groups-en-noun-lmvRHjZX",
      "links": [
        [
          "protecting group",
          "protecting group#English"
        ]
      ],
      "tags": [
        "form-of",
        "plural"
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    }
  ],
  "word": "protecting groups"
}

{
  "head_templates": [
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      "args": {
        "1": "en",
        "2": "noun form"
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      "expansion": "protecting groups",
      "name": "head"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English non-lemma forms",
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      "form_of": [
        {
          "word": "protecting group"
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      ],
      "glosses": [
        "plural of protecting group"
      ],
      "links": [
        [
          "protecting group",
          "protecting group#English"
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        "plural"
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  ],
  "word": "protecting groups"
}