noun
moving body; mobile object
Technical term used in physics, engineering, and related fields to refer to an object in motion or capable of moving. Not typically used in everyday conversation.
このシミュレーションでは、移動体の軌道を計算します。
In this simulation, we calculate the trajectory of the moving body.
移動体通信技術は急速に発展している。
Mobile communication technology is developing rapidly.
物体 means a physical object or body, but does not inherently imply motion; 移動体 emphasizes that the object is moving or mobile.
Compound of 移動 (movement) and 体 (body). A straightforward technical coinage.