rotation

noun

/rəʊˈteɪʃn/

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[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
Topics Spacec1
[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.
Topics Farmingc1

Word Originmid 16th cent.: from Latin rotatio(n-), from the verb rotare, from rota ‘wheel’.

单词	rotation
释义	rotation noun /rəʊˈteɪʃn/ /rəʊˈteɪʃn/ jump to other results [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 Topics Spacec1 [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. Topics Farmingc1 Word Originmid 16th cent.: from Latin rotatio(n-), from the verb rotare, from rota ‘wheel’.
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