sort by Rank | Alpha
| Possible Meanings | Rank |
| Numbers on Roll | **** |
| Notice to Readers | **** |
| New Oxford Review | **** |
| Novel Object Recognition | **** |
| Nucleolar Organizer Regions | **** |
| National Organization for Rare | **** |
| Naturally Occurring Radioactive | **** |
| Nucleolar Organizer Region | *** |
| Nucleolus Organizer Regions | *** |
| Notices of Requirement | *** |
| New Order Regime | *** |
| Notice of Return | *** |
| Net Operating Revenue | *** |
| Nucleolus Organizing Regions | *** |
| National Operations Room | *** |
| Nitrogen Oxide Reduction | *** |
| Nucleolar Organiser Regions | *** |
| Notice of Responsibility | *** |
| Nucleolus Organizing Region | *** |
| Non Ordinarily Resident | *** |
| NUCLEOLAR ORGANIZING REGIONS | *** |
| Net Operating Results | *** |
| Nucleolar Organiser Region | *** |
| Ag-nucleolar organizer region | ** |
| National Obstetric Registration | ** |
| Neuro-Oncology Register | ** |
| non-obese resistant | ** |
| nuclear organizing region | ** |
| nucleus olfacto-retinalis | ** |
| Nuclear Organizer Regions | ** |
| Nuclear Organizer Region | ** |
| News on Request | ** |
| nitric oxide reductase | ** |
| Not Operationally Ready | ** |
| np ostprignitz ruppin | ** |
| orphanin-FQ/nociceptin receptor | ** |
| Notices of Revision | ** |
| Nucleolus Organiser Regions | ** |
| Non Operating Reefer | ** |
| Neurologic Outcome Research | ** |
| New Orleans and the River | ** |
| Notice of the Race | ** |
| Navy Outdoor Recreation | ** |
| Nucleolus Organiser Region | ** |
| Nucleolar Organising Regions | ** |
| Notices of Revisions | ** |
| Network Operations Rep | ** |
| New Orleans Rave | ** |
| Notice of Regattas | ** |
| Naval Ordnance Research | * |
| Neafc Org Reports | * |
| National Organization for Rivers | * |
| Niehoff of Russia | * |
| Nucleolar Organization Regions | * |
| Number of Optional Referendums | * |
| Name of Owner or Resident | * |
| Name of the Owner or Resident | * |
| Neutrino Oscillation Research | * |
| Nonlinear Optics Resource | * |
| Notice of Registration | * |
| Notice of Rejection | * |
| Notice of Release | * |
| Notice of Revisions | * |
| Notice Of Revocation | * |