Read Edit View history 光年 guāngnián light-year Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 光年 guāngnián light-year The distance that light travels in a vacuum in one year; approximately 9.46 trillion kilometers. Edit Delete References Add reference No references for this word.
光年 guāngnián light-year The distance that light travels in a vacuum in one year; approximately 9.46 trillion kilometers. Edit Delete