| AR | absolute risk; accounts receivable; achievement ratio; actinic reticuloid [syndrome]; active resista... |
|---|---|
| EC | effective concentration; ejection click; electrochemical; electron capture; embryonal carcinoma; eme... |
| ECP | ectrodactyly-cleft palate [syndrome]; effector cell precursor; endocardial potential; eosinophil cat... |
| ER | efficiency ratio; epigastric region; ejection rate; electroresection; emergency room; endoplasmic re... |
| CSR | 1) Cheyne-Stokes Respiration 2) Central Supply Room; 중앙공급실 |