Vocabulary What does 郵政 (ゆうせい, yuusei) mean? 郵政 (ゆうせい, yuusei) means postal system. Quick factsReadingゆうせいRomajiyuuseiPart of speechnoun 郵政ゆうせいyuuseipostal system1noun postal systemKanji in this word郵mail, postal政politics; government