French

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Etymology

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Calque of English light second.

Pronunciation

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  • IPA(key): /sə.ɡɔ̃d ly.mjɛʁ/
  • Audio:(file)
  • Rhymes: -ɛʁ

Noun

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seconde-lumière f (plural secondes-lumière)

  1. light second (astronomical distance)
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