"lightguides" meaning in English

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      "examples": [
        {
          "ref": "2015, Dominika Alfs, “Test of Lightguides for the J-PET Detector”, in arXiv:",
          "text": "At the two strip J-PET test system a series of measurements was performed with different combinations concerning the length of the lightguides (3 mm and 3 cm) and scintillators (3, 15 and 30 cm), shape of lightguides (trapezoidal and cylindrical, with and without a cut matching the scintillator size) and optical connection between elements (optical gel and glue).",
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      "form_of": [
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      "glosses": [
        "plural of lightguide"
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  "word": "lightguides"
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  "lang_code": "en",
  "pos": "noun",
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          "ref": "2015, Dominika Alfs, “Test of Lightguides for the J-PET Detector”, in arXiv:",
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        "plural of lightguide"
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  "word": "lightguides"
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