👉 In mathematics, a "countermand" is a mathematical concept that refers to a rotation of an object. It is often used in physics and engineering contexts where objects are rotated around their center of mass or other fixed point. A countermand is defined as a rotation performed on a rotating object by its axis of rotation, without changing the direction of the object's motion. The term "countermand" comes from the Latin word "counter", which means opposite, and "mander", which is an