MEDIUM (WALK, TROT, OR CANTER) – At trot and canter, a pace of moderate lengthening, with a longer stride than in the collected or working paces but shorter than in the extended pace. The uphill balance is greater than in the working or lengthening pace, and the length of frame and suspension are between that of the collected and extended paces. The movement produced is rounder than that of extension. The tempo should remain nearly the same as in the collected pace.
At walk, a pace of moderate lengthening, with a length of stride and frame between that of the collected and extended walks, and showing the natural longitudinal oscillation of the neck.
Full glossary: http://bit.ly/2019USDFGlossary
