| AI | accidental injury; accidentally incurred; adiposity index; aggregation index; allergy and immunology... |
|---|---|
| AIH | amelogenesis imperfecta, hypomaturation type; American Institute of Homeopathy; artificial inseminat... |
| AP | accessory pathway; accounts payable; acid phosphatase; acinar parenchyma; action potential; active p... |
| AR | absolute risk; accounts receivable; achievement ratio; actinic reticuloid [syndrome]; active resista... |
| AROM | active range of motion; artificial rupture of membranes |