JMdict: 1273120

光年 【こうねん】

  1. [n] light-year
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
光 Ray, Light コウ ひか.る, ひかり
年 Year, Counter For Years ネン とし

Words often seen with this one: (experimental feature)

星 (10)