fixed side; fixed part; stationary side
Technical term used in mechanical, engineering, or manufacturing contexts to refer to the non-moving side or part of an assembly, often contrasted with a movable or rotating side.
In this device, a sensor is attached to the fixed side.
Please check the positions of the fixed side and the movable side of the mold.
Compound of 固定 (kotei, 'fixation, fixed') and 側 (gawa, 'side'). The reading こていがわ follows standard rendaku voicing of かわ to がわ in compounds.