| OMP | olfactory marker protein; ornithine monophosphate; outer membrane protein |
|---|---|
| OOA | outer optic anlage |
| 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 |