| fps | feet per second; frames per second |
|---|---|
| rad/s | rad per second; radian per second |
| ECG | Electro-Cardio-Graphy(-Gram); 심전도 = EKG 1. Conducting System Structu... |
| C2 | second cervical nerve; second cervical vertebra; second component of complement |
| c/min | cycles per minute |