Meaning: こうねんadv. (Kanji=後年) in later years, in the future, in the time to comen. (Kanji=後年) future yearsn. (Kanji=光年) light year, distance that light travels in 1 year (approximately 9.46 trillion kilometers or 5.88 trillion miles); very far awayn. (Kanji=高年) old age, adult age, elderly period of life