"luxon" meaning in English

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        "2": "la",
        "3": "lux",
        "4": "",
        "5": "light"
      },
      "expansion": "Latin lux (“light”)",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "",
        "3": "on"
      },
      "expansion": "+ -on",
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  ],
  "etymology_text": "Latin lux (“light”) + -on.",
  "forms": [
    {
      "form": "luxons",
      "tags": [
        "plural"
      ]
    }
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      "expansion": "luxon (plural luxons)",
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  "lang_code": "en",
  "pos": "noun",
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          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
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        }
      ],
      "derived": [
        {
          "word": "luxonic"
        }
      ],
      "glosses": [
        "Any particle that travels at exactly the speed of light and has zero mass: typically a photon."
      ],
      "id": "en-luxon-en-noun-jzRlRdus",
      "links": [
        [
          "physics",
          "physics"
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          "particle",
          "particle"
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        [
          "speed of light",
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        ],
        [
          "mass",
          "mass"
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          "photon",
          "photon"
        ]
      ],
      "raw_glosses": [
        "(physics) Any particle that travels at exactly the speed of light and has zero mass: typically a photon."
      ],
      "related": [
        {
          "word": "tachyon"
        },
        {
          "word": "tardyon"
        }
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "translations": [
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "rukuson",
          "sense": "particle",
          "word": "ルクソン"
        }
      ]
    }
  ],
  "word": "luxon"
}

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  "derived": [
    {
      "word": "luxonic"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
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        "5": "light"
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      "expansion": "Latin lux (“light”)",
      "name": "der"
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        "1": "en",
        "2": "",
        "3": "on"
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      "expansion": "+ -on",
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  ],
  "etymology_text": "Latin lux (“light”) + -on.",
  "forms": [
    {
      "form": "luxons",
      "tags": [
        "plural"
      ]
    }
  ],
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  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "tachyon"
    },
    {
      "word": "tardyon"
    }
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        "en:Physics",
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      "glosses": [
        "Any particle that travels at exactly the speed of light and has zero mass: typically a photon."
      ],
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          "physics",
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        ],
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          "particle",
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          "speed of light",
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        ],
        [
          "mass",
          "mass"
        ],
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          "photon",
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        ]
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        "(physics) Any particle that travels at exactly the speed of light and has zero mass: typically a photon."
      ],
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  "translations": [
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "rukuson",
      "sense": "particle",
      "word": "ルクソン"
    }
  ],
  "word": "luxon"
}