light years

A form of light year — A unit of length used to measure extremely large distances, equal to approximately 9.46 trillion kilometres 10 trillion kilometres (10¹⁶ metres), equivalent to the distance light travels in one Julian year.

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Meanings

noun
  1. pluralplural of light year
Cite this entry
APA

light years. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/light%20years

MLA

“light years.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/light%20years. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “light years,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/light%20years.

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