- [uncountable] the action of an object moving in a circle around a central fixed point
- the daily rotation of the earth on its axis
- the earth's rotation around the sun
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- [countable] one complete movement in a circle around a fixed point
- This switch controls the number of rotations per minute.
- [uncountable, countable] the act of regularly changing the thing that is being used in a particular situation, or of changing the person who does a particular job
- crop rotation/the rotation of crops (= changing the crop that is grown on an area of land in order to protect the soil)
- job rotation (= the practice of regularly changing the job that a particular person does so that they become experienced in different areas)
- in rotation Wheat, maize and sugar beet are planted in rotation.
- The committee is chaired by all the members in rotation.
Word Originmid 16th cent.: from Latin rotatio(n-), from the verb rotare, from rota ‘wheel’.
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rotation