sort by Rank | Alpha
| Possible Meanings | Rank |
| Obverse Reverse | **** |
| Outboard Racing | **** |
| Owners Rick | **** |
| Oncology RN | **** |
| OILS AND RESINOIDS | **** |
| OPerational Right | **** |
| Observation Request | **** |
| OFF AND ON RAIN | **** |
| Olson Road | **** |
| Officer Recruiter | **** |
| Operational Release | *** |
| Office Reed | *** |
| Ontario Restaurants | *** |
| OK Rentals | *** |
| Outer Roll | *** |
| observation requests | *** |
| OWNED RIDDEN | *** |
| Object Re-use | *** |
| Obsessive Roseologist | *** |
| OPENINGS REGARDLESS | *** |
| Oxygen Relief | *** |
| OMITTED REPEALED | *** |
| OCT REQUEST | *** |
| OIG REFERRED | *** |
| OWNERS TO ROUND | ** |
| OCHOCO RES | ** |
| odds ration | ** |
| OWYHEE RES | ** |
| NADPH-cytochrome P450 reductase | ** |
| Ocular retardation | ** |
| optical rotation | ** |
| OUTAGE RESTART | ** |
| ovulation rate | ** |
| Owned Rosedale | ** |
| response rate | ** |
| OVERCAST R | ** |
| outflow resistance | * |
| relative risk | * |
| orderly room (Company Office) | * |
| Offices at Redding | * |
| Operational Risk | * |
| OBSERVATION OF RESTRICTED | * |
| OFF-LOADED REFUELING | * |
| Office of Reinvention | * |
| Office of Rural | * |
| OPERATING RANIER | * |
| Operational Requirements/Operations Requirements | * |
| OT-II ON RANGE | * |
| other rank (NATO) | * |
| OWNER REGISTRN | * |