| misc | miscarriage; miscellaneous |
|---|---|
| AO | abdominal aorta; achievement orientation; acid output; acridine orange; ankle orthosis; anodal openi... |
| OG | obstetrics and gynecology; occlusogingival; oligodendrocyte; optic ganglion; orange green; orogastri... |
| OJ | orange juice |
| OrJ | orange juice |