Meaning Of The Word Light year
What's the definition of Light year? Find Light year meanings, definitions and more at the Real Dictionary online.
Light year Meaning
| Light year Definition |
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What's The Definition Of Light year?
light year
countable noun: A light year is the distance that light travels in a year. light year in British English a unit of distance equal to the distance that light travels in a vacuum in one year, c. 9,460,000,000,000 km (5,880,000,000,000 mi) noun: a unit of distance used in astronomy, equal to the distance travelled by light in one year, i. e. 9.4607 × 1012 kilometres or 0.3066 parsecs light-year in American English noun: the distance traversed by light in one mean solar year, about 5.88 trillion mi. (9.46 trillion km): used as a unit in measuring stellar distances |
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