sort by Rank | Alpha
| Possible Meanings | Rank |
| Non Permanent Resident Alien | **** |
| National Petrochemical Refiners Association | **** |
| National Petroleum Reserve Alaska | **** |
| National Park and Recreation Association | *** |
| Norwegian Public Roads Administration | *** |
| National Preparedness and Response Authority | *** |
| National Parks Recreation Association | *** |
| Northwest Professional Rodeo Association | *** |
| cyclase/natriuretic peptide receptor-A | ** |
| natriuretic peptide receptor-A | ** |
| Natriuretic Peptide Receptor A | ** |
| natriuretic peptide receptor type A | ** |
| National Photographic Record Association | ** |
| non production related activities | ** |
| Nottingham Park Residents Association | ** |
| Northern Province Roads Agency | ** |
| National Parks and Recreation Association | ** |
| Network Provider in Any | ** |
| national petroleum reserve area | ** |
| National Petrochemicals Refiners Association | ** |
| National Petrochemical and Refining Association | ** |
| National Personnel Recovery Architecture | ** |
| Norwegian Public Road Administration | ** |
| National Patriotic Reconstruction Assembly | ** |
| National Petroleum Refineries Association | ** |
| National Petroleum Refining Association | ** |
| National Police Rodeo Association | ** |
| National per Resident Amount | ** |
| New Product Risk Assessment | ** |
| National Personal Robot Association | ** |
| National Petrochemical Refining Association | ** |
| National Petrochemical and Refinery Association | ** |
| national prevention research agenda | ** |
| Northern Province Road Agency | ** |
| National Parents Rights Association | * |
| National Performing Roller Association | * |
| National Petroleum and Refiners Association | * |
| National Professional Racers Association | * |
| Network for Postgraduate Research in Adolescence | * |
| Northwest Pro Rodeo Association | * |
| National Petrochemical Refiners Assn | * |
| National Petrochemicals and Refiners Association | * |
| National Pro Rodeo Association | * |
| Northlands Park Residents Association | * |
| Newspaper Personnel Relations Association | * |
| Northern Partnership for Records of Achievement | * |
| National Petroleum Reserve of Alaska | * |
| Non Photographic Realistic Art | * |