三段
さ
ん
だ
ん
Meanings
1
third stage; three stages
Used for a third step or phase in a process, or for something consisting of three stages.
The plan is divided into three stages.
I bought a three-tier shelf.
2
third dan
Refers to the third rank in martial arts (judo, karate, etc.), go, shogi, and similar grading systems.
He holds a third dan in judo.