gyr-
combining form
            variants  
 or gyro-
        
    1
                    
                                          
              
          
                                                      : ring : circle : spiral                                      
              
                             
gyromagnetic
                         
                
                    2
                    
                                          
              
          
                                                      : gyroscope                                      
              
                             
gyrocompass
                         
                
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  Merriam-Webster unabridged




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