also: よんだん
noun
fourth dan
Used in martial arts, go, shogi, and other ranking systems to denote the fourth level of mastery.
彼は柔道で四段を取得した。
He earned a fourth dan in judo.
囲碁の四段になるには何年もかかる。
It takes many years to reach fourth dan in go.
Standard kanji spelling. The reading よだん is the most common.
Alternate reading, less common. May be used in some contexts or by some speakers.
四 (four) + 段 (dan, rank). The term follows the standard numbering pattern for dan ranks.