The word "rotation" is a noun that refers to the process or act in which something rotates or turns around an axis or a central point. It can also be used to refer to one complete cycle of something in this way. Rotation is also used to refer to a set pattern of variations that take place in a series or sequence that is more or less constant or fixed in its variations. The word "rotation" is also found used in mathematics. In billiards the word "rotation" refers to a game in which the sequence of pocketing balls is in the ascending order, i.e. From lower denomination balls to higher ones. "The earth's rotation around its axis takes twenty four hours" and "Crop rotation is the best way to prolong the fertility of soil" are examples of rotation used in sentences.
