sort by Rank | Alpha
| Possible Meanings | Rank |
| Observatoire National De | ***** |
| Over the Needle | **** |
| Opera Nazionale Dopolavoro | **** |
| October November December | *** |
| Officer Next Door | *** |
| Other Neurological Diseases | *** |
| Office for Nuclear Development | *** |
| Office National Du | *** |
| Other Neurological Disorders | *** |
| Ovid Nursing Database | *** |
| Order of the New Dawn | *** |
| Over Nite Delivery | *** |
| optic nerve decompression | ** |
| optic nerve disease | ** |
| optic nerve dysfunction | ** |
| optical nerve disc | ** |
| organic neurological diseases | ** |
| other neurological disease | ** |
| other neurological diseases | ** |
| other nervous diseases | ** |
| other neurologic disease | ** |
| other neurologic diseases | ** |
| other neurologic disorders | ** |
| other neuromuscular disorders | ** |
| Optical Networks Division | ** |
| other CNS diseases | ** |
| other nervous system disorders | ** |
| other noninflammatory neurological diseases | ** |
| non-inflammatory neurological diseases | ** |
| non-inflammatory neurological disorders | ** |
| noninflammatory neurological diseases | ** |
| Oblates of Notre Dame | ** |
| patients with other neurological diseases | ** |
| patients with other neurological disorders | ** |
| Of the Oblates of Notre Dame | ** |
| Ophthalmic Nursing Diploma | ** |
| Optical Networking Division | ** |
| Organizzazione Nazionale Dopolavoro | ** |
| Our Niger Delta | * |
| Operational Need Date | * |
| Other National Departments | * |
| Other Neurodevelopmental Disorders | * |
| Operator Need Date | * |
| Ontario Northern Development | * |