| OND | Ophthalmic Nursing Diploma; orbitonasal dislocation; other neurological disorders |
|---|---|
| OPL | other party liability; outer plexiform layer; ovine placental lactogen |
| ORM | orosomucoid; other regulated material; oxygen ratio monitor |
| OTPS | other than personal services |
| qod | every other day [Lat. quaque altera die] |
| TAH | Total Artificial Heart |
|---|---|
| YAC | Yeast Artificial Chromosome |
| EH-TAH | electrohydraulic total artificial heart |