관절염이 · 관절염을
arthritis
Example
어머니는 관절염 때문에 계단을 오르기 힘들어하세요.
My mother has a hard time climbing stairs because of arthritis.
Word parts
관 gate, joint+절 node+염 inflammation
-염 = inflammation: 관절염, 위염, 비염.
Good to know
Pronounced [관절렴] — an ㄴ sound is added before 염 and becomes ㄹ.