One-line meaning
The agent’s body, sensors, actuators, geometry, dynamics, and action interface.
Example
G1 with parallel grippers and G1 with dexterous hands are distinct practical embodiments even if the base robot is shared.
Nuance
“Cross-embodiment” can mean robot-to-robot transfer; human-to-robot transfer is also sometimes described this way, so specify the source and target.
Related concepts
Sources
Primary source to be added. This entry is a working explanation awaiting source review.