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Definition of rotary adjective from the Oxford Advanced Learner's Dictionary

rotary

adjective
 
/ˈrəʊtəri/
 
/ˈrəʊtəri/
[only before noun]
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  1. (of a movement) moving in a circle around a central fixed point
    • rotary motion
  2. (of a machine or piece of equipment) having parts that move in this way
    • a rotary engine
    3. Word Originmid 18th cent.: from medieval Latin rotarius, from rota ‘wheel’.
See rotary in the Oxford Advanced American Dictionary
Check pronunciation: rotary

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