The term for the speed at which an object travels is called velocity. Velocity is a vector quantity, meaning it encompasses both the speed of the object and its direction of motion. Unlike speed, which only measures how fast an object is moving, velocity provides a fuller description by specifying the direction as well. This concept is fundamental in physics and helps in analyzing motion, predicting trajectories, and understanding forces acting on moving objects. It is essential for applications in engineering, navigation, and various scientific fields.