| rad/s | rad per second; radian per second |
|---|
| ECG | Electro-Cardio-Graphy(-Gram); 심전도 = EKG 1. Conducting System Structu... |
|---|---|
| RAD | Right Axis Deviation; 우축 편위 |
| rad | radiation absorbed dose |
| rem | Roentgen Equivalent Man 1 rem = 1 rad x RBE |
| cGy | centigray (1 rad) |