This is the 4312th most frequent Korean word.
치른
"치른" means "paid," "handled," or "undergone," depending on the context.
In this usage, '치르다' as '치른' relates to overcoming or dealing with an experience, in this case, a new process.
기업은 새로운 과정을 성공적으로 치렀다.
The company successfully undertook the new process.
In this sentence, '치른' (past tense of '치르다') indicates 'having completed or gone through an event or task', with the associated subject being 'exam'.
그는 중요한 시험을 치렀다.
He took an important exam.
Here, '치른' expresses 'having carried out a ceremony', with the subject referring to 'wedding'.