| PAC | Premature Atrial Contraction |
|---|---|
| PAC | papular acrodermatitis of childhood; parent-adult-child; pericarditis-arthropathy-camptodactyly [syn... |
| pac | pachytene |
| ACR | abnormally contracting region; absolute catabolic rate; acriflavine; adenomatosis of colon and rectu... |
| ARF | acute renal failure; acute respiratory failure; acute rheumatic fever; Addiction Research Foundation... |