| R' | in electrocardiography, the second positive deflection during the QRS complex |
|---|---|
| RCC | radiological control center; rape crisis center; ratio of cost to charges; receptor-chemoeffector co... |
| ROCF | Rey-Osterrieth Complex Figure |
| rSr | an electrocardiographic complex |
| SC | conditioned stimulus; sacrococcygeal; Sanitary Corps; scalenus [muscle]; scapula; Schwann cell; scia... |