"diyl" meaning in English

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  "lang_code": "en",
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      "derived": [
        {
          "word": "pyridinediyl"
        }
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      "examples": [
        {
          "ref": "1992, L.A. Paquette, Combining C-C ?-Bonds, page 240:",
          "text": "Both the thermally and the photochemically initiated extrusion of nitrogen from bicyclic diazene (1) leads to the formation of a 1,3-diradical (diyl) which is structurally related to trimethylenemethane.",
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      "glosses": [
        "Used in descriptive names to indicate the presence of two identical substituents or functional groups attached to a central atom or structure."
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        "(chemistry) Used in descriptive names to indicate the presence of two identical substituents or functional groups attached to a central atom or structure."
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        "chemistry",
        "natural-sciences",
        "physical-sciences"
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  "word": "diyl"
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  "derived": [
    {
      "word": "pyridinediyl"
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  "lang_code": "en",
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      ],
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        "(chemistry) Used in descriptive names to indicate the presence of two identical substituents or functional groups attached to a central atom or structure."
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  "word": "diyl"
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