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light-year

Definition of light-yearnext
as in world
a huge physical or conceptual distance my sister and I are close in age, but personality-wise, there are light-years between us

Synonyms & Similar Words

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Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of light-year Betelgeuse is approximately 600 light-years from Earth, and is dying a slow death that someday will turn extremely violent! Mike Lynch, Twin Cities, 4 Jan. 2026 One standout target to try locating is the Orion Nebula, a nearby stellar hotspot located 1,350 light-years away and one of the easiest deep-sky objects to spot without a telescope. Michael D'estries, Travel + Leisure, 1 Jan. 2026 Alien debate Scientists claimed to have found signs of life on a planet called K2-18b, which orbits a star 120 light-years from Earth, according to a study published in The Astrophysical Journal Letters in April. Devika Rao, TheWeek, 31 Dec. 2025 Trying to wrap one’s mind around the scale of civic destruction wrought in just 11 months stretches the limits of the imagination, like conceptualizing light-years or black holes. Michelle Goldberg, Mercury News, 30 Dec. 2025 See All Example Sentences for light-year
Recent Examples of Synonyms for light-year
Noun
  • Wrought Studio Lawandra Modern Upholstered Swivel Storage Chair To the naked eye, this may seem like a typical upholstered chair, but there’s one sneaky detail that makes a world of difference.
    Ali Faccenda, PEOPLE, 12 Jan. 2026
  • The Sassanid Persian coins reflect the far-reaching ties that China had with the known world.
    Maria Mocerino, Interesting Engineering, 12 Jan. 2026
Noun
  • By fictionalizing him as a real spaceman visiting new galaxies in each era of his career, Cordell brings young readers into the magic and wonder of Bowie’s life.
    Katie Hill, PEOPLE, 6 Jan. 2026
  • Several sessions will showcase new results from surveys that combine data from the James Webb Space Telescope (JWST), Hubble Space Telescope and the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile, offering fresh insights into how galaxies formed and evolved in the early universe.
    Samantha Mathewson, Space.com, 5 Jan. 2026

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Cite this Entry

“Light-year.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/light-year. Accessed 13 Jan. 2026.

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