| OM | obtuse mental; occipitomental; occupational medicine; ocular movement; oculomotor; Osborne Mendel [r... |
|---|---|
| osteo | osteoarthritis; osteomyelitis; osteopathy |
| SAPHO | synovitis-acne-pustulosis hyperostosis-osteomyelitis [syndrome] |
| ACI | acceleration index; acoustic comfort index; acute cardiac ischemia; acute coronary infarction; acute... |
| AIE | acute inclusion-body encephalitis; acute infectious encephalitis; acute infective endocarditis |