| oLH | ovine luteinizing hormone |
|---|---|
| OP | occipitoparietal; occipitoposterior; occiput posterior; octapeptide; olfactory peduncle; opening pre... |
| OPL | other party liability; outer plexiform layer; ovine placental lactogen |
| OSM | ovine submaxillary mucin; oxygen saturation meter |
| AHE | Acute Hemorrhagic Encephalomyelitis |