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A.Word.A.Daywith Anu Garg
1. A unit of length equal to the distance traveled by light in one year in a vacuum, about 5.88 trillion miles or 9.46 trillion km.
2. Very far, in distance or time.
From light, from Old English leoht + year, from Old English gear. Earliest documented use: 1888.
A light-year is a unit of distance -- there’s no such unit as a heavy-year (nor is there a dark-year). To get a light-year’s worth of frequent-flier miles you’d need to travel between New York and Moscow only a little over a billion times.
“Baseball under Manfred’s leadership moved a light-year ahead of the NFL when it came to sensitivity toward people of color by setting an example in its sport about what would no longer be acceptable in branding.”
Kevin B. Blackistone; MLB’s Manfred Led the Way. Will the NFL Choose to Follow?; The Washington Post; Feb 12, 2019.
See more usage examples of light-year in Vocabulary.com’s dictionary.
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