Vocab InfoA17 Noun光年(こうねん)light yearDetailsExamples光年light yearDetailsExamplesDictionary DefinitionCommonNoun1. light-yearAstronomyAll Forms光年 【こうねん】DetailsAudioPlayExamplesThere are no sentences available for this contentHold tight, context sentences are coming soon!Self-Study SentencesStudy your own way!Add sentences and study them alongside Bunpro sentences.Try Bunpro