入にゅう段だん

にゅ

う

だ

ん

Meanings

1

noun, noun or participle which takes 'suru', intransitive verb

attaining 1st dan; becoming a dan holder

Used in martial arts and board games such as judo, shogi, and go to describe reaching the first dan rank or becoming a ranked practitioner.

昇しょう段だん
昇段 means promotion to a higher dan rank, while 入段 specifically refers to reaching the first dan.
段だん位い
段位 is the general term for dan rank or grade, not the act of attaining it.

Compound of 入 (enter) and 段 (dan rank), literally 'entering the dan ranks'.