Last Updated
：2026/01/08
光年
Hiragana
こうねん
Counter
Japanese Meaning
光が1年間に進む距離を表す天文学上の距離の単位 / 非常に長い時間や距離のたとえとして用いられる表現
Easy Japanese Meaning
ひかりがいちねんですすむきょりをあらわすたんい
Chinese (Simplified) Meaning
天文学中的距离单位，指光在真空中一年行进的距离 / 用于计量天体之间距离的单位（如“一光年”、“十光年”）
Chinese (Traditional) Meaning
天文學的距離單位，指光在一年內行進的距離 / 約等於9.46兆公里的距離單位 / 用於表示恆星與星系間距離的計量單位
Korean Meaning
빛이 1년 동안 이동하는 거리의 단위 / 천문학에서 거리 측정에 쓰는 단위
Indonesian
tahun cahaya; satuan jarak astronomi / jarak yang ditempuh cahaya dalam satu tahun
Vietnamese Meaning
năm ánh sáng (đơn vị đo khoảng cách thiên văn) / khoảng cách ánh sáng đi trong một năm
Tagalog Meaning
taon-liwanag / yunit ng distansiya sa astronomiya (layong nalalakbay ng liwanag sa isang taon)
Sense（1）
(astronomy) light year
（ canonical ）
（ romanization ）
（ romanization ）
（ hiragana historical ）
（ hiragana ）
Quizzes for review
See correct answer
光年
See correct answer
The distance to this star is about 5 light years.
See correct answer
この星までの距離は約5光年です。
Japanese - English
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