"seconde-lumière" meaning in French

{
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    {
      "args": {
        "1": "fr",
        "2": "en",
        "3": "light second"
      },
      "expansion": "Calque of English light second",
      "name": "calque"
    }
  ],
  "etymology_text": "Calque of English light second.",
  "forms": [
    {
      "form": "secondes-lumière",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "secondes-lumière"
      },
      "expansion": "seconde-lumière f (plural secondes-lumière)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
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          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Astrophysics",
          "orig": "fr:Astrophysics",
          "parents": [
            "Astronomy",
            "Physics",
            "Sciences",
            "Space",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Units of measure",
          "orig": "fr:Units of measure",
          "parents": [
            "Metrology",
            "Quantity",
            "Applied sciences",
            "Mathematics",
            "Sciences",
            "Formal sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "light second (astronomical distance)"
      ],
      "id": "en-seconde-lumière-fr-noun-dbBO13yL",
      "links": [
        [
          "light second",
          "light second"
        ]
      ],
      "related": [
        {
          "word": "minute-lumière"
        },
        {
          "word": "heure-lumière"
        },
        {
          "word": "jour-lumière"
        },
        {
          "word": "année-lumière"
        },
        {
          "word": "siècle-lumière"
        }
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sə.ɡɔ̃d ly.mjɛʁ/"
    },
    {
      "audio": "LL-Q150 (fra)-LoquaxFR-seconde-lumière.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/d/df/LL-Q150_%28fra%29-LoquaxFR-seconde-lumi%C3%A8re.wav/LL-Q150_%28fra%29-LoquaxFR-seconde-lumi%C3%A8re.wav.mp3",
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    },
    {
      "rhymes": "-ɛʁ"
    }
  ],
  "word": "seconde-lumière"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "en",
        "3": "light second"
      },
      "expansion": "Calque of English light second",
      "name": "calque"
    }
  ],
  "etymology_text": "Calque of English light second.",
  "forms": [
    {
      "form": "secondes-lumière",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "secondes-lumière"
      },
      "expansion": "seconde-lumière f (plural secondes-lumière)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "related": [
    {
      "word": "minute-lumière"
    },
    {
      "word": "heure-lumière"
    },
    {
      "word": "jour-lumière"
    },
    {
      "word": "année-lumière"
    },
    {
      "word": "siècle-lumière"
    }
  ],
  "senses": [
    {
      "categories": [
        "French countable nouns",
        "French entries with incorrect language header",
        "French feminine nouns",
        "French lemmas",
        "French multiword terms",
        "French nouns",
        "French terms calqued from English",
        "French terms derived from English",
        "French terms with IPA pronunciation",
        "Pages with 1 entry",
        "Pages with entries",
        "Rhymes:French/ɛʁ",
        "fr:Astrophysics",
        "fr:Units of measure"
      ],
      "glosses": [
        "light second (astronomical distance)"
      ],
      "links": [
        [
          "light second",
          "light second"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sə.ɡɔ̃d ly.mjɛʁ/"
    },
    {
      "audio": "LL-Q150 (fra)-LoquaxFR-seconde-lumière.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/d/df/LL-Q150_%28fra%29-LoquaxFR-seconde-lumi%C3%A8re.wav/LL-Q150_%28fra%29-LoquaxFR-seconde-lumi%C3%A8re.wav.mp3",
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    },
    {
      "rhymes": "-ɛʁ"
    }
  ],
  "word": "seconde-lumière"
}