light-second

Noun

(plural light seconds)

(astronomy, physics) A unit of length equal to the distance light travels in one second

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"light-second." YourDictionary, n.d. Web. 06 December 2018. <https://www.yourdictionary.com/light-second>.

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light-second. (n.d.). Retrieved December 06th, 2018, from https://www.yourdictionary.com/light-second

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