Co je rotation? Co je rotation? The act or process of turning around a center or an axis: the axial rotation of the earth. A single complete cycle of such motion.Mathematics A transformation of a coordinate system in which the new axes have a specified angular displacement from their original position while the origin remains fixed.Regular and uniform variation in a sequence or series: a rotation of personnel; crop rotation. Games An order of shooting balls in billiards in which the ball with the lowest number on the table is always pocketed first.