| OPL | other party liability; outer plexiform layer; ovine placental lactogen |
|---|---|
| OSF | organ system failure; osteoclast-stimulating factor; outer spiral fiber; overgrowth stimulating fact... |
| OULQ | outer upper left quadrant |
| OURQ | outer upper right quadrant |
| OW | once weekly; open wedge; outer wall; oval window |