| rotary | electrical converter consisting of a synchronous machine that converts alternating to direct current or vice versa |
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| rotary | a road junction at which traffic streams circularly around a central island |
| rotary | relating to or characterized by rotation |
| rotary | (computer science) the actuator that moves a read/write head to the proper data track |
| rotary | a group of businessmen in a town organized as a service club and to promote world peace |
| rotary | electrical converter consisting of a synchronous machine that converts alternating to direct current or vice versa |
| rotary | an internal-combustion engine having cylinders arranged radially around a central crankcase |
| rotary | an internal-combustion engine in which power is transmitted directly to rotating components |
| rotary | a group of businessmen in a town organized as a service club and to promote world peace |
| rotary | a freely moving joint in which movement is limited to rotation |
| rotary | a printing press for printing from a revolving cylinder |
| rotary | the long airfoil that rotates to provide the lift that supports a helicopter in the air |