light day

noun

A unit of length equal to the distance light travels in one day; about 170 astronomical units

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Meanings

nounlight day (plural light days)

plural light days

  1. astronomyA unit of length equal to the distance light travels in one day; about 170 astronomical units

Translations

Finnish valovuorokausi
  • valovuorokausiunit of length
Cite this entry
APA

light day. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/light%20day

MLA

“light day.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/light%20day. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “light day,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/light%20day.

Source: light day on Wiktionary, CC BY-SA 4.0.