"LPW" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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      "alt_of": [
        {
          "word": "lumen per watt"
        }
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      "glosses": [
        "Initialism of lumen per watt."
      ],
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        [
          "lumen",
          "lumen#English"
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        [
          "per",
          "per#English"
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          "watt",
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  "word": "LPW"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "alt_of": [
        {
          "word": "lumen per watt"
        }
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      "glosses": [
        "Initialism of lumen per watt."
      ],
      "links": [
        [
          "lumen",
          "lumen#English"
        ],
        [
          "per",
          "per#English"
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          "watt",
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  "word": "LPW"
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