rotary

Từ điển Oxford Advanced Learner 8th

ro·tary [rotary rotaries] adjective, noun BrE [ˈrəʊtəri] NAmE [ˈroʊtəri]
adjective only before noun
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

Word Origin:
mid 18th cent.: from medieval Latin rotarius, from rota ‘wheel’.
 
noun (pl. ro·taries)(NAmE) = ↑traffic circle

Word Origin:
mid 18th cent.: from medieval Latin rotarius, from rota ‘wheel’.
 

• Từ đồng nghĩa / Synonyms:
  circular, orbitual, synchronous converter, rotary converter, traffic circle, circle, roundabout