noun
range of motion; ROM
Technical term used in medicine, physical therapy, and sports science to describe the extent of movement possible at a joint.
肩の可動域を広げるストレッチを毎日行っている。
I do stretches every day to increase my shoulder's range of motion.
リハビリでは、まず関節の可動域を確認します。
In rehabilitation, we first check the range of motion of the joints.
Compound of 可動 (movable) and 域 (range, area). A modern technical term with no historical derivation beyond its kanji components.