| RACE | rapid amplification of complementary deoxyribonucleic acid ends |
|---|---|
| APR | abdominoperineal resection; absolute proximal reabsorption; acute phase reaction or reactant; amebic... |
| ARR | aortic root replacement |
| AVR | accelerated ventricular rhythm; antiviral regulator; aortic valve replacement |
| DIR | double isomorphous replacement |