Light-year
"Light-year" in a Sentence (3 examples)
A light-year is the distance light travels in one year. It's 9.5 trillion (9,500,000,000,000) kilometers.
A light-year is a unit of distance. It is the distance that light can travel in one year.
What does the expression light-year mean?
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.