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say it: LAHY-tyir
light-year is a noun meaning "the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers". It is pronounced /ˈlaɪˌtjɪɹ/ — LAHY-tyir. It carries one recorded sense.
the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers
Definitions, synonyms and semantic relations for light-year come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.