sort by Rank | Alpha
| Possible Meanings | Rank |
| N omega-hydroxy-L-arginine | ** |
| N(omega)-hydroxy-l-Arg | ** |
| N(omega)-hydroxy-L-arginine | ** |
| Nomega-hydroxy-L-arginine | ** |
| Network on Humanitarian Action | ** |
| Network of Humanitarian Assistance | ** |
| North Okanagan Handicapped Association | ** |
| Nominal Ocular Hazard Area | * |
| Northwest Oral History Association | * |
| National Organization of Housing Agencies | * |