[noun]The earth completes 366 rotations about its axis in every leap year. [C]With this drill it's possible to adjust the speed of rotation. [U]Crop rotation is an important way of maintaining the fertility of farmland. [U]There are ten employees and they do the various jobs in rotation (= they take turns to do them).
ROTATION
Meaning of ROTATION in English
Cambridge English vocab. Кембриджский английский словарь. 2012