Dictionary/退団たいだんTaidan退団 (Taidan) is a Japanese noun meaning “leaving (a group, team, etc.)”.Meaningsnoun, suru verb, intransitive verbleaving (a group, team, etc.)Kanji in 退団退retreat団groupRelated words辞めるto resign下がるto come down退けるto put something out of the way退けるto put something out of the way退くto step aside退院leaving hospital団長leader of a group引退retirement退屈tedious退職retirement布団futon退学dropping out of school